Tracking down fifteenth century French and Italian coats of arms

Question

I'm trying to track down coats of arms for the following people:

Catherine of Taranto

Tristan de Clermont

But I don't know even where to start. Any ideas, even in general of where to look for fifteenth century French and Italian nobility?

Answer 1

The Catherine of Taranto article you mention refers to the Orsini article, which shows the Orsini coat of arms:

See the references and links at the bottom of the page.

Rely on the sources rather than Wikipedia in this case.

Update: This article on François Guillaume de Castelnau de Clermont-Lodève, Archbishop of Narbonne, appears relevant. He was born in 1480, 50 years after Tristan's death; the central part of the coat of arms may not have changed. But all this is supposition, included because you wanted leads.

Note the galero in the image: