Pretentious it is! I much prefer
Sally. My aunt and uncle used to live in a house named
Beau Soleil, which was no such thing: small, suburban and rather dark. I never knew if they'd named it or if it came complete with the name.
If it were used as a m name - it's grammatically m in French anyway - it could shorten to
Sol. I prefer
Sol to
Soleil, but I'd rather see it as a nn for
Solomon.