New evidence for a Dutch sword in an English river (Solving the Sword, Part 6)
In Parts 1–5 of this series, I told a detective story: I deciphered the Witham Sword’s inscription, identified its owner, and followed it from Holland to England. In Part 5, I proposed a timing and motive for its ending up in the river—anti-Dutch spite during the Anglo-Dutch Wars. The pejoratives are real. The timeline aligns. The theory is plausible.
But a reader’s recent comment made me look into the case again, and it turns out the Witham Sword has a lot more to say.
For starters, the Witham has been receiving weapons for more than 2400 years.
David Stocker and Paul Everson surveyed the central Witham Valley—the stretch of river where the sword was found—mapping out:¹
- 10 causeways—ancient paths across the fenlands
- 6 barrow fields
- 10 churches, including Lincoln Cathedral
- 10 monasteries
- 20 metal finds
This paints a picture of the importance of the archaeological landscape. The metal finds include weapons: from the Late Bronze Age (1000–700 BCE) there are 17 swords and 14 axes, as well as spearheads and daggers. The two richest sites—Washingborough-Fiskerton and Stamp End—each produced dozens of deposits, and at both, the practice continued into the Iron Age (ca. 800 BCE–43 CE) and Romano-British period (43–410 CE), adding armor, helmets, shields, and decorated scabbards to the count. Across all periods, there are at least 90 weapon deposits from seven causeway sites in a single river valley.
These all belong to the same pattern:²
[T]he sacred significance of these locations started to be marked by a series of votive depositions, primarily of weapons and other military objects. At most of the sites, this sequence of votive depositions seems to have continued through the Iron Age and Romano-British periods, and in 70% of cases, deposition continued into the medieval period. The latest securely dated depositions in these sequences were made in the fourteenth century or later.
Millennia of practice, sustained across eras and cultures, deposits clustering near causeways across the fenlands and minster sites—the infrastructure points where the sacred geography of the river intersects with the built environment of the Church.
The Witham itself is the reason. It is liminal in every sense available—physical, political, cultural, sacred:³
The river formed not just the boundary for estates, parishes and manors, but in earlier times it was the boundary of the independent political state of Lindsey. It was, and still is, a boundary marked by important deep-rooted cultural differences, such as dialect. Nor was it merely a boundary of water; even today the Lindsey bank of the river on which the monasteries are set is relatively densely wooded, and it was even more so at Domesday. The remarkable line of Witham monasteries along this boundary, therefore, are visible entries and exits into a different place; secular as well as spiritual. They were all founded by Lindsey lords, and one could see them as symbolic guardians of the entry into the territory. In such circumstances, the causeways leading to these symbolic entries would necessarily become the foci of ritualised processions.
The Witham is a ritual corridor—a waterway that accumulated meaning over generations, each deposit reinforcing the sacredness of the act for the next. The causeways are thresholds; the monasteries are gatekeepers. A weapon placed into this water is not discarded. It is placed into a border between worlds—the same one prehistoric deposits recognized, the same that each successive culture inherited rather than invented.
Ben Raffield linked the Witham deposits to Sliðr, the river of swords that forms the border between Miðgarðr and Hel in Norse myth—a boundary river receiving weapons as a matter of cosmology.⁴ Nordic settlers in the Witham Valley during the Anglo-Saxon period (410–1066) easily recognized and continued the practice.
The Church did the same—the river’s ancient power was not denied—it was simply reassigned:⁵
By the action of washing St Oswald’s bones in the Witham waters, the traditional power of those waters was henceforward attributed to the saint, rather than to whatever water-spirits might have been resident previously.
Stocker and Everson’s phrase is “Church-supervised deposition”. The Church didn’t suppress the practice, it administered it. Similarly, the churches and monasteries that cluster near the deposition sites aren’t obstacles to the ritual—they’re its infrastructure.
They posit a theory on the ritual’s meaning:⁶
It may be […] that casting the lord’s sword, his symbol of lordship, into the river represented a symbolic termination of that lordship, in the same way that the staffs of officers of the royal household were traditionally broken at their funerals. […] [T]he deposition of swords—the symbols perhaps of those Lindsey lordships—in the boundary river might be seen as a symbolic “defence” of the approaches to Lindsey, much as Excalibur was the symbol of Arthur’s defence of his kingdom and had to be returned to the spiritual guardian of the state, the Lady of the Lake, once it had served its purpose in this world. Were the Witham swords similarly seen as the obligatory military offering by the community’s nominal war-leaders to mark their frontier?
A 10th-century Viking sword was found in the Witham, close to Lincoln. Two high-status blades, separated by three centuries, deposited in the same corridor. Part 5 asked how a Dutch sword ended up in an English river. The ritual corridor doesn’t answer that question. It replaces it with a better one: why has this particular river been receiving swords for as long as anyone has been making them?
Stocker and Everson describe the central Witham valley as sacred from the Bronze Age onward:⁷
[A] more-or-less continuous ritual tradition, focused at regularly spaced locations, where community rituals had occurred from the Bronze Age onwards. At each, the initial focus was a conventional barrow cemetery, but when these were flooded […] the rituals became transferred to watery features in the new landscape.
These included the river itself, as well as pools and meres along its course. As to the depositions therein:⁸
Although we know nothing about the specific rituals undertaken on these occasions, we may guess that they included casting nets into the river and may wonder whether such ceremonies belong to that large group of pagan festivals that were christianised in the conversion period. In this case at least, it seems, the connection with the river is explicit.
The Christian buildings did not displace the sacred geography—they indexed it. What had been marked by water and open ground was now marked by consecrated stone.
This pattern—pagan practice absorbed into Christian infrastructure rather than eliminated by it—is not unique to the Witham. The sacred springs at Bath, the subject of several articles in the Defixiones series on this blog, follow the same logic. As does the Thames, another English river whose weapon deposits span centuries of changing justification.
This is the reframe my Anglo-Dutch spite theory misses. The hostility was real, and a Dutch sword may have attracted special contempt during the wars. But spite alone doesn’t explain why this river. It doesn’t explain the Viking sword. It doesn’t explain over two thousand years of precedent. The act Part 5 attributed to politics belongs to the landscape itself.
That accounts for why the sword was deposited into the Withham. But the inscription—the Christus vincit formula that identifies the sword—needs its own proof. In my original series, it had a problem. The only parallels I could find were on coins—specifically the écu d’or, first struck under Louis IX in 1266, bearing on its reverse:
XP[iσto]C V[in]CIT X[Piσto]C R[egn]AT XP[iσto]C I[n]PERAT
Christ conquers, Christ reigns, Christ commands.
The coins proved the laudes regiæ circulated on metal. But they proved it too late. The first écu was minted a decade after Willem II’s death. The Witham Sword’s inscription—compressed almost past recognition into a cryptic sequence of letters—presupposes an audience that knows what is being abbreviated. A formula so severely contracted can only function if the full version is already in the room. The écu, arriving afterward, can’t do that work.
Nor could I find it inscribed on weapons—another important part of what needed to be established as a tradition a coin, of whatever date, could not perform. But it turns out it was inscribed on at least one weapon—and not just any weapon either.
The formula appears on a sword displayed in Vienna’s Kaiserlichen Schatzkammer right beside the Zeremonienschwert I discussed in Part 2.⁹

On one face of its crossguard, the sword spells out the formula nearly in full:
+C[H]RISTVS•VINCIT•C[H]RISTVS•REIGNAT•CHRIST[VS]•INPERAT
And on the reverse, an abbreviated version:
+C[H]RISTVS:VINCIT:C[H]RISTVS REINAT
The longer version is easily understood, using only the most conventional contractions. The sword dates to the end of the 12th century—likely Otto IV’s coronation as Holy Roman Emperor (HRE) in 1198, roughly half a century before Willem II gained the same title. The same formula, on the same same kind of weapon, in the same imperial tradition a full generation before the Witham sword.
The Reichsschwert doesn’t just prove the laudes regiæ appeared on swords. It proves the convention was already legible—already a recognized practice in the imperial coronation tradition—by the time someone compressed it onto the Witham blade. The severe abbreviation is shorthand and the Reichsschwert is the longhand it abbreviates.¹⁰

An inventory of Trifels Castle—a Reichsburg since 1113 under HRE Henry V—from 1246 records:¹¹
zwey swert mit zweyn scheiden, gezieret mit edelem gesteyne
Two swords with two scabbards, adorned with precious stones
These are commonly interpreted to be the Reichsschwert and the Zeremonienschwert. Both would have been brought to Aachen for Willem’s coronation, the same occasion on which he added the eagles to the scabbard of the latter. He didn’t need to go looking for the Christus vincit formula—he held it in his hands. He put his mark on the Zeremonienschwert and he claimed the laudes regiae from the Reichsschwert for his own blade.
Still, while the inscription identifies a tradition, the blade identifies a sword.
The equestrian seal is the most standardized image in medieval sigillography—a fixed compositional formula of mounted warrior, armed and armored, repeated across every barony and county in western Europe. But the formula is a container, not a portrait. What fills it is individual. As John Cherry notes:¹²
[Seals] provide evidence for changes in fashion in both secular and ecclesiastical costume and for the development of armour.
They are not symbols of knighthood. They are records of a specific knight’s equipment. They provide enough specific detail historians have used them as evidence for changes in helm and shield design.
Adrian Ailes traces the relationship to its origin:¹³
Armorial bearings […] first appeared on “equestrian” seals in the 1130s. Here the seal owner was typically dressed as a mounted knight in full armour, his shield (and occasionally banner and horse caparison) displaying his personal device.
The heraldic shield—the device most associated with medieval identity—began as one detail inside the equestrian seal before migrating, by the end of the twelfth century, onto its own separate seal. The equestrian image was the original identity document; heraldry evolved out of it rather than being added to it.
And the investment was not limited to great lords. A seal matrix recovered in Berkshire—belonging to Fulk III FitzWarin, Lord of Whitington, Shropshire—is described thus:¹⁴
The image is so well detailed that mail, folds in the surcoat, shield and swordbelt strap and the slit and grill in the helmet are all clearly visible.
If even an obscure knight’s seal engraver rendered individual equipment at that resolution, a Count of Holland’s seal is not showing a generic sword. When Floris V’s blade carries double fullers in wax, the engraver is recording what he saw.
Double-fullered swords—blades with two parallel grooves rather than the standard single channel—are vanishingly rare in the medieval record. A recent catalogue of early medieval European swords found just 11 confirmed examples in a corpus of roughly 5,500—0.2%.¹⁵ Alfred Geibig’s typology of sword blades excludes double fullers entirely; there are too few to constitute a type.¹⁶ By the 13th century, the feature is rarer still, as blade geometry shifts toward the broad single fuller characteristic of Oakeshott’s Types XII and XIII.¹⁷
All this should make it clear the Witham Sword’s double fullers don’t represent a type, but a unique blade. And the sword on the seal of Willem’s son, Floris V, bears this same feature.¹⁸


Overlay Floris V’s seal on a photograph of the Witham sword, and they match. Not approximately—almost exactly. The double fullering, the length and breadth of the blade, the shape of the weapon: the contours of a wax impression struck in 1288 align with a steel blade pulled from a Lincolnshire river in the 19th century. The seal doesn’t depict a sword. It depicts this sword—an image that could only have been created with the weapon as its model.
The inscription names the owner. The seal places the sword in his son’s hand. What remains is the route—how a Dutch sword reached a Lincolnshire river, and when. Before tracing it, one of my previous objections needs dissolving.
The sheer volume of finds in the ritual landscape of Lincoln means there is actually another inscribed Witham Sword in the British Museum’s collection—the 10th-century one I’ve mentioned already. Properly, the Witham Sword I’ve been discussing is called the Witham knightly Sword to distinguish it from this Viking one.¹⁹

Clearly, it’s also the sword of an elite. Specialist in early swords, Ian G. Peirce describes it as:²⁰
[O]ne of the most splendid Viking swords extant […]. [B]lade, guard and pommel […] form an harmonious [sic] whole.
Its inscription, which appears on one other sword in Tatarstan, reads:
+ LEUTLRIT
This is generally interpreted as Lutfrit—the name of the sword’s smith—a typical blade inscription of that age.
Peirce also notes:²¹
Its excellent condition may be attributed to the splendid preservation qualities of the river mud which, as one would expect, dissolved the grip but most effectively nurtured the metallic elements of the weapon.
This observation removes my earlier concerns about the knightly sword’s condition. I felt its excellent state implied a later deposition—that it could not have spent centuries submerged—the Witham Viking sword answers that. It is 200 years older. It survived just as well.
Based on this, I’ll tighten my timeline. In 1285, Floris V betrothed his infant son Jan I to Elizabeth, daughter of Edward I of England. The child was sent across the North Sea to be raised at the English court. He was six years old. He was also the last male heir of the House of Holland.
What travels with a six-year-old prince to a foreign court? Attendants. Letters of credential. And the objects that prove his claims—the dynasty’s regalia, its sword. Of course, I’m still guessing here. But the inference has weight. The weapon the seal of Floris proves he carried, that Willem II inscribed—this is exactly the kind of object that accompanies a dynastic betrothal. It does not represent the lineage. It is that lineage made steel.
Jan died in 1299, at 15. Holland passed to the House of Avesnes through the Hainaut line. There was no one to return the sword to. Edward became its owner by default—not by conquest, not by right, but by the quiet accident of a boy dying young.
Edward died in 1307 at Burgh by Sands, within sight of the Scottish border he had spent his reign trying to erase. Among his closest confidants was Henry de Lacy, the third Earl of Lincoln. The king’s body was sent south—first to lie in state at Waltham Abbey, then to burial at Westminster. This route passes through Lincolnshire. Through Lincoln.
Why would the king’s close companion not stop at his own castle on the way? And why would he not honor his friend with the rituals of the landscape of his home?

We do not know what happened to Edward’s arms. When Edward I’s tomb was opened at Westminster in 1774, the king lay with crown, staff, and scepter—no sword. But we know what happened to weapons in the Witham Valley when a lord died and his body passed through the ritual corridor. The tradition Stocker and Everson documented wasn’t ancient history in 1307. It was still operating.
This investigation is not closed. Floris’ seal arrived years after my case files were published, proving it was modeled on a surviving blade. The laudes regiæ inscription on a different HRE sword evaded me previously. Evidence does not arrive on a schedule. The next piece may already be in a collection catalog, a museum drawer, a comment thread—wherever the thing you weren’t looking for lurks.
I’d like to thank Aaron Stone, who brought Floris’ seal to my attention.
This article is part of the Solving the Sword series
Notes
- David Stocker and Paul Everson, “The Straight and Narrow Way: Fenland Causeways and the Conversion of the Landscape in the Witham Valley, Lincolnshire”, The Cross Goes North, 2003.
- Ibid.
- Ibid.
- Ben Raffield, “A River of Knives and Swords: Patterns of Deposition Along a Fenland Waterway”, European Journal of Archaeology, 2014.
- Stocker and Everson, 2003.
- Ibid.
- Ibid.
- Ibid.
- Das Reichsschwert (Mauritiusschwert), WS XIII 17, Kunsthistorisches Museum, Weltliche Schatzkammer, end of the 12th century. Note two different renderings of Christ even in this brief inscription—just the type of thing that confounds interpreters.
- Workshop of Johann Baptist Homann (?), “Authentica repraesentatio duorum Insignivm Imperii Romano-Germanici”, 1755.
- Mittelalterliche Schatzverzeichnisse 1: Von der Zeit Karls des Großen bis zur Mitte des 13. Jahrhunderts, Central Institute for Art History and Bernhard Bischoff, eds., 1967.
- John Cherry, “Sigillography”, Britannica (website), retrieved July 2026.
- Adrian Ailes, “Medieval Armorial Seals in The National Archives (UK)”, A Companion to Seals in the Middle Ages, Laura J. Whatley, ed., 2019.
- A. Byard, “BERK-FDCFD2: A Medieval Seal Matrix”, finds.org.uk, 2014.
- Tomáš Vlasatý, “Swords with Double Fullers: 8th–12th Centuries”, Project Forlǫg (website), February 2026.
- Alfred Geibig, Entwicklung des Schwertes im Mittelalter, 1991.
- Ewart Oakeshott, The Archaeology of Weapons: Arms and Armour from Prehistory to the Age of Chivalry, 1960.
- Seal of Floris V of Holland, NG-KOG-1901-52, Rijksmuseum, 1288.
- River Witham Sword, 1848,1021.1, British Museum, 10th century.
- Ian Peirce, “The Development of the Medieval Sword c.850–1300”, The Ideals and Practice of Medieval Knighthood III: Papers from the Fourth Strawberry Hill Conference, Christopher Harper and Bill, Ruth Harvey, eds., 1990.
- Ibid.
- Illustration from the 1774 exploration of Edward I of England’s tomb in Marc Morris, A Great and Terrible King: Edward I and the Forging of Britain, 2008.











