As exegesis of the Gospel readings, sermons, homelies and tractatus of the church fathers play an important pastoral part in the medieval mass. Moreover, such texts appear as lessons to be read at Matins of the divine office like they do in the 12th century Lectionarium Placentinum. A presentation of the two parts of this medieval lectionary (Temporale and Sanctorale) made for the cathedral of Piacenza as well as its contents of feasts, saints and texts for the liturgical year. The main focus will be on the Temporale with its more than 140 feasts with Gospel incipits and ca. 335 texts, the major part of which is attributed to the Big Four: Ambrose, Augustine, Leo Magnus and Gregory the Great. The second focus on the ca. 140 texts attributed to Augustine. Various authentic sermons and selected parts of tractatus in euangelium Iohannis constitute the major part of Augustine’s ”contribution” to the Temporale, but of greater interest for the conference will probably be the ones attributed to Augustine but now considered to be written by others and the ones attributed to other authors but now considered to be Augustinian texts. Finally, I present some texts attributed to Augustine which I have not been able to identify yet.