I have lots of children's books that Granny gave me - E. Nesbit, LM Montgomery and Kipling. Plus all the Beatrix Potters. I also have all her Georgette Heyers and her copy of Sanditon (by Jane Austen and Another Lady.) Walpole's Jeremy Stories. She had a lot of crime fiction, but my parents sold a lot of those to specialist collectors (they were mostly original green Penguins), so I only have a handful. I also have some of her non-fiction books, on philosophy and Greek myths, and a first edition of Virginia Wolf's a Room of One's Own. And a copy of Browning's Pied Piper of Hamelin, which she copied out and added watercolour illustrations on every page.
From Mum, I have all her EF Benson, Edna O'Brien, Margaret Foster, Margaret Drabble, RF Delderfield, Helen Cresswell's Bagthorpe Saga, and various classics like the Brontes, Tolstoy, Mrs Gaskell and others (some may also be Granny's.) Also the Female Eunuch and some books about Suffragettes. Some cookery books. And some of her books on the Archers, which were one of the few things my sister and I argued over when we cleared house after Mum died.
From Dad, I have James Herriot, Ian Fleming, Neville Shute, all the PoW escape stories, and some children's books.
From them both, I have Alexander Cordell, various books on industrial history and wildlife.
The oldest inherited book I have is from the 1680s or something.
I spent a lot of my childhood in the library. I did work in libraries, and probably still would have, if IT didn't pay a lot more but I quite like living above the breadline.