@cliffordbeshers In case you're still looking, this is what Bard had to say:

• A Cat Called Mortimer by Shane Conaty is a children's book about a rich cat who is unhappy with his life. He decides to run away and find a new home, where he can be himself.
• The Cat Who series by Lilian Jackson Braun features a Siamese cat named Mortimer who helps his owner, Jim Qwilleran, solve mysteries.
• Mortimer by Robert Cormier is a young adult novel about a boy who befriends a stray cat named Mortimer. Mortimer helps the boy to cope with the death of his father.
• Mortimer's Tale by Charles De Lint is a fantasy novel about a cat named Mortimer who is the last of his kind. Mortimer must find a way to save his people from extinction.