Sarah May Macdonald.
As with most middle names mine is a family name. On my granny's side there are the May family. They hail from Cornwall originally, making it up to Edinburgh eventually via London. My granny herself carries the middle name herself. Elizabeth May Macdonald. Also my Dad was very close to his granny, whose maiden name was May.
I'm not sure there is a huge amount more to say... Other than that I think I got off lightly! My Nana was Margaret Jesse Newall Robertson Hazlewood. Phew.