One of my ancestors actually believed himself to be a large, furry, cat. Now this is odd in and of itself, but was made only the stranger by the fact that he was immensely wealthy.
His bed was a giant pillow, akin to a cat-bed. In place of a washroom, he had a giant litter box and a staff of cleaners... By far the strangest part, however, would be his pension to feline behaviour... He died choking on the tiny bones of a captured mouse.