There was a film actress called Tuesday Weld - no idea when or what she appeared in, butapparently her actual given name was
Susan, and when she was very small she couldn't pronounce it; the closest she could get was Tuesday, and the nickname stuck.
One could stretch things a bit and regard
Dominic as a
Sunday name; also
Freya for Friday. And I know a woman here in South
Africa whose given name is Blandina but she's mostly known as Sondo because she was born on a
Sunday and that's what
Sunday is in Northern Sotho. Come to think of it, I also know an Afrikaans woman named
Luna ...