I don't find
Sidney "girly" at all. I actually don't like this name for a girl. I think it could be used for a boy these days, why not I say.
Sidney James is a great combo. I think a classic masculine mn fits well with the fn
Sidney. I also like
Sidney John,
Sidney Luke,
Sidney Oscar,
Sidney Paul,
Sidney Eric and
Sidney Aaron. I like
Morgan and
Sidney for brothers, that works well.
Mackenzie and
Madison are not my style and just scream "trendy" to me, sorry.
I don't like
Eartha at all.
Ocean is alright. I like
Ocean Elizabeth,
Ocean Rebecca,
Ocean Louisa,
Ocean Tabitha and
Ocean Marissa.