 But if the duke in question was Henry the Proud, who ruled Bavaria from 1126 to 1139, the date of the composition of the poem would then be about 1131, in which year Henry is known to have made a journey to Paris, where he presumably procured the French manuscript.The lay itself was written in Bavaria, probably at Ratisbon, as is indicated also by the frequent mention of Bavarian names and places.That a translation was first made into Latin is shown by the numerous Latin endings that remain.