Jean Le Gendre was active in the chapels of François I and Henri II during the 1540’s and 1550’s. Cazauz, pp. 361-2: no archival documents, but based on allusion to him in Chappuys Discours de la court of 1543. He authored a music treatise, which was published by Attaingnant in 1545 (now lost). Clement A. Miller, “Le Gendre, Jean,” New Grove 2, XIV, 480.