I understand how frustrating the hunt can be. I've found that surnames start to get fuzzy around the 1300s, which of course further complicates the issue.

Regrettably, I haven't seen definitive proof of Leonora De Medici's parentage either; only notes that the "information was added by an unknown ...

You're very welcome - I'm happy to help. My data is not just from "a group of genealogy website family trees" - but if you already knew all of this, I doubt that I would have had access to any written documentation that you haven't already seen.

Hello;
Jacopo Di Genova and Leonora De Medici are my grandparents (many generations back!). Leonora is the daughter of Lorenzo de Medici (born 1395) and Ginevra Cavalcanti (born 1400) of Florence. (It can be tough to find direct information about daughters, as frequently, only sons are counted ...