He is known for only one major work, Le Bel Inconnu, the Fair Unknown, a poem of 6266 lines[1] in Old French that was composed in the late-twelfth or early-thirteenth century.
[8] However, his identity has been further clarified, due to the efforts of Alain Guerreau [fr] who made his inquiries based on heraldic clues.
[16] There are two Renauds fitting the time period, the stronger possibility being Renaut/Renaud, Seigneur de Saint-Trivier (fl.
[b][12][4] That song author's place of origin was "Rencien", could be a scribal error for "Rencieu" (Latin: Rantiacum) or Rancy which is close to Saint-Trivier, the domain inherited by the junior sons of this clan,[17] providing additional corroboration for the identification.
Renaud of Saint-Trivier was the third son of Renaud/Raynald III, Seigneur de Bâgé (1153–1180)[18] who in the year of succession in 1153 had battled with Girart [fr] Count Macôn, Humbert lord of Beaujeu, and others[19][20] (they were resentful of resentful of Renaud III's dominion over the Bresse region[21]).