Indulgence dated Apr. 29, 1587, for Alfonso di Giacomo d'Antonio Maria Piccolomini, duca di Montemarciano, in which Pope Sixtus
V granted permission for the building of a chapel in the ducal palace in Montemarciano.
Contained in:
Piccolomini Family Papers. Folder 93
Manuscript location:
Kislak Center for Special Collections, Rare Books and Manuscripts University of Pennsylvania Ms. Coll. 742