Giovanni d'Andrea, Lectura super arboris consanguinitatis et affinitatis, on the table of consanguinity, manuscript on vellum and paper [northern Italy (probably Venice), late fifteenth century]

5 leaves (4 vellum with a contemporaneous paper singleton added at end), 235mm. by 172mm., one inner opening with two full-page genealogical diagrams (the Arbor consanguinitatis as a stylised tree with naturalistic roots touched in brown wash, and the Arbor affinitatis as a series of interconnected roundels beneath a single arched yellow bar), text in two columns, c.65 lines in a late fifteenth-century hand showing influence of humanist script, initials and paragraph marks in red, watermark of the paper leaf a close variant of Briquet 9397 (Venice, 1477), printed blue nineteenth-century label with ‘35’ on back pastedown, some small stains and worm holes, bound in modern vellum over pasteboards, boards bowed, splitting at spine

Giovanni d'Andrea (c.1270-1348) was closely associated with the University of Bologna and regarded as an expert in canon law. His most important works were extensive commentaries on papal decretals. He is reported to have died at Bologna of the Black Death in 1348.

This manuscript includes the first part of the text, followed by the diagrams for the Arbor consanguinitatis and Arbor affinitatis.