The Summa super titulis (or rubricis) Decretalium is a famous legal
treatise about the Decretals of Gregory IX, written around
1241-1243 by Godefridus de Trano, who was professor of canon law in
Bologna and later became cardinal († 1245). In this copy, the
beginning of each of the five books is marked with an illuminated
initial (ff. 1r, 45r, 75v, 105v, 124v). Among the annotations and
manicules in the margins and between the columns, there are also
numerous small human heads, pen drawings in profile (e.g., on f.
154r). This manuscript is part of the library of Walter Supersaxo
(ca. 1402-1482), Bishop of Sion, and of his son Georges (ca.
1450-1529). Before that, the manuscript was the property of Georges
de Saluces (Bishop of Aosta 1433 and of Lausanne 1440, deceased
1461), at the time when he was still dean of Puy-en-Velay. The
Supersaxo library has another manuscript that originated in
Bologna, S 102, which is also from the 14th century and contains
legal texts.
