Trivial Fact of the Day: Syd Barrett and Richard Thompson were distant cousins

A passing mention in this video has led me to a snippet from an Uncut interview with Richard Thompson:

"Syd Barrett wasn't a great musician in the orthodox sense but he had a good instinct for the possibilities of music I recently learned that Syd's father's great-grandmother was a cousin of Elizabeth Garrett Anderson, Britain's first female doctor who was my mother's great-great-aunt. Syd and I were, in fact distant, cousins."