For a boy: Isaac Heath (Heath is a family name, not after Ledger).
For a girl: Sterren Rose. Sterren (meaning star) is Cornish - as are we and as is our crazy surname - and Rose is also a family name.
DS likes Lola 
; my mother likes Isolda (also Cornish-ish). DS, named Freddie, would have been called Polly had he been a girl but I think that Polly and Freddie sounds much too cutesy-wutesy.
Sterren or Isolda wouldn't be too weird here in a county full of Perans, Treeves, Morwennas and Demelzas but might she hate me when she goes away to university in a city full of people with 'normal' names?!