A sword currently on display at the British Library's Magna Carta exhibition is quite a mystery, specifically the enigmatic inscription of gold on one side of the double-edged blade. Obtained from a dig in England in July 1825, part of the British Museum's collection, the inscription has baffled historians. Other swords with similar inscriptions often invoke a Saint, but this particular inscription is a mystery. 

The construed inscription on the sword: +NDXOXCHWDRGHDXORVI+

To see what the Universal Library algorithm might have written about this sword, to test the Library for future usefulness and capacity to help investigate historical phenomenon, I perused the Universal Library's books for the history of the sword as the Universal Library Algorithm wrote it. There are many variations and outright false-leads. However, in Volume 18 to the 212th power of The True History of the Periodic Universe, an inkling of the nature of the inscription began to form. 

Filtering by my upbringing in classical scholarship, history, data combination, linguistics and comparing to the algorithm's responses, the embellishments and letters come to the following possibility:

This is a sword representing the Teutonic Order, which centuries of happenstance lay finally in England. The embellishments consist of two crosses potent with celestial extensions bifurcated facing one embellished Latin letter, N. That letter is confused as being an embellished R, however, (N)umen/(N)umine is the hidden acrostic answer to the other two embellishments. The other stylized letters are the initials of each Latin wordphrase, and the XOX and XO represent Christograms of a specific kind (the word Jesus wholly): 

Nomine domine XOX christos wafan dei numine gloria huius domine XO regis vadiare imperpetuum.

Literal Translation:
In the name of the Lord Jesus Christ this weapon of God’s Power/Divine Will and glory of our Lord Christ the King is pledged forever. 

More informal:
In the name of the Lord Jesus Christ this weapon of God’s Power/Divine Will is forever pledged to the glory of our Lord Christ the King. 

The stylized letter W is a mystery itself, for the letter W was not often used or seen around the time of this sword, and in some cases was considered an unusable or useless sound-letter. However, for the purpose of association to a people and their ideal, the inscriber wished a dual meaning: 1) this is a sword (literally) duly inscribed and wielded by the Germanic people (teuton/die diutscher), not just a foreigner's double-edged sword and 2) the inscriber's intention was to nay-say a common (idea of) war, to nay-say that there was a valid English notion of war or a valid French notion - this letter/word choice announces and lifts to the highest human station a German concept of war. Only in the Germans does God's Divine Will find its proper people.

An acrostic-esque message is hidden within the embellishments. The crosses potent with celestial (Chi-ro extensions) and the embellished Latin letter N (Numen/Divine Will/Numine/Power) are that hidden acrostic (+:N:+) that surrounds the entirety of the Oath by Invocation (ND XOX CHWD (N) GHD XOR VI) with a complete spiritual framework; the pre-existent Christ, the Word of God - as an extension visible in the sky from horizon to horizon - runs through all things and thereby the Divine Will made the universe. This Oath by Invocation glorifies that whole and that the weapon for its defense is charged eternally, ever waged by the Germanic people, who are rightful and proper wagers of such a holy effort.

The happenstance that brought it from England was simply centuries of travel, and the inconvenience of having a German sword at a time when owning such a relic would have been socially/politically improper (or even deadly); the sword was unceremoniously dumped in the river (by its drunken owner).

Quite Literally Yours,

The Librarian