Would use:
Alys, Osian, maybe
MacsenKnow people who have kids called: Mali(lots),
Cadi,
Ffion,
Harri, Jac,
Elis,
Tomos,
Cai &
MorganLocal trends back home: nns as first names - e.g. Llio - & newish Welsh spellings of English names, like Nansi & Lwsi & Greisi & Cet
I tend to like old-king-list type names: Meilyr,
Arwel, Rhun,
Owain.