The book entitled, A WHO’S WHO OF YOUR ANCESTRAL SAINTS, by Alan J. Koman, was published several years ago. The book is now printed in the UK, as well as in the U.S. The Catholic Family has reviewed it for the December 2020 issue of Catholic Ancestor. Koman takes 24 great historic people, European Christians, from 256Ad to 1322 AD and then details the 275 saints in their ancestry. Their profiles make interesting reading, giving insights into the lives of people deemed worthy to be regarded as saints at that time. The book gives plenty of material and references to sources to encourage and direct research by family historians, genealogists, secular or church historians.
Here is a link to the book’s description: