1. University of Pennsylvania, Ms. Coll. 764 Item 113 DS ID: DS1940 Title: Power of attorney Date: 1422.
2. University of Pennsylvania, Ms. Coll. 764 Item 114 DS ID: DS1941 Title: Power of attorney Date: 1422.
3. University of Pennsylvania, Ms. Coll. 764 Item 88 DS ID: DS2073 Title: Power of attorney Date: 1420.