High Quality Content by WIKIPEDIA articles! Geoffrey IV de la Tour Landry (c. 1320 – 1391) was a nobleman of Anjou who compiled Livre pour l`enseignement de ses filles for the instruction of his daughters, in 1371–1372. A similar book he had previously written for his sons, according to his opening text, has disappeared. The work became the most popular educational treatise of the Late Middle Ages. It was translated into German, as Der Ritter vom Turn, and at least twice into English, once by William Caxton, who printed it as The Book of the Knight of the Tower in 1483.