ANDRE LE CHAPELAIN (ANDREAS CAPELLANUS), mediaeval French writer and chaplain at the French court (whence his surname), was born in the second half of the 12th century, and probably held his office under Philip Augustus (118o-1223). His famous treatise, Liber de Arte honeste amandi et de Repro batione inhonesti Amoris, written in Latin at the beginning of the 13th century and translated twice into French during the century, is an interesting source of information concerning mediaeval manners and morals, and the "court of love" in par ticular. There are 12 mss. extant, of which the most important are : the 13th century ms. in the Vatican, coll. Ottobonianae, no. 1463 ; the 14th century ms. in the Bibliotheque Nationale, no. 8758; and the 15th century ms. in the Amhrosian Library, A. no. 136. The work has also been translated into German and Italian. The most widespread edition is that of D. Mahler, Erotica seu Amatoria Andrei Capellani regii (Dortmund, 1610) ; other edi tions are by E. Trojel, Andreae Capellani regii Francorum De Amore libri tres (Copenhagen, 1892) ; and by H. M. Elster, a German translation, 3 Bucher Tuber die Liebe . . . (1924).