 The first known commentary on the Prior Analytics in the Latin West is an anonymous work that has recently been edited (Thomsen Thörnqvist 2015) but is not yet fully studied (see Thomsen Thörnqvist 2010 and 2013 for more details). The author has been called Anonymous Aurelianensis III by Sten Ebbesen, who studied parts of the work (Ebbesen 1981). He dates it to c. 1160–80. The theory of the assertoric syllogism was repeated and summarized in almost all logic works from this time, but there are no other major Latin commentaries that we know of until the 1240’s when Robert Kilwardby (d. 1279) wrote his Literal Commentary on the Books of the Prior Analytics (In libros Priorum Analyticorum expositio). 