I am not aware of any ancestors who were readers except my parents and my father's father. I am sure there were others.
My grandfather had what I would now consider a small library of hardback books, mostly in series, in his den. My father ended up with his Laurence books of Arabia, I got R.L. Stevenson's books that he had, and, oh, my Dad got the Biography of Lincoln or the Civil War series. I don't remember any others.
My family were all readers from an early age. First I remember visiting a bookmobile before out local library was built; then out local library; then getting my pass into the adult section. I remember us watching Elvis Presley make his debut on TV while we all sat around with books in our hands, which we weren't reading at the moment.
I always remember my Mom, Dad, and sister reading and using the local library. My brother went one step further and became a book dealer in Omaha, Nebraska in one of his varied occupations.