Turoldus

Turoldus is the name that appears in the very last line of the Chanson de Roland, and depending on how you interpret the key word declinet it could belong to the scribe writing the poem down, the jongleur performing it, or (perhaps least likely) the author of the poem in our modern sense.

The line runs: « Ci falt la geste que Turoldus declinet. »

It could be variously interpreted as: "Here ends the tale that Turoldus has been—copying? relating? reciting? performing?"

—or even (at a stretch) as: "Here ends the tale, because Turoldus is getting tired (i.e., his head is bending low)."

See the French Wikipédia article Turold. The accompanying picture is from the Bayeux tapestry, and may or may not be the Turoldus of the Chanson de Roland.