Read the list in my earlier post. As I said, that's about it.
I looked through my thesis and could only add:
Nest
Hunydd (hinith)
Perwyr (pehr-weer)
Erdudful (ehr-DID-vil)
Iwerydd (ih-WEHR-ith)
Arddun (ar-theen)
Ellyw (eh-hleeoo)
And that really is it. Seriously. Don't bother suggesting any more names because if they are not on these two lists they extremely unlikely to be medieval. Most Welsh names used in Wales today are inventions of the last 100 years and were NEVER used in the middle ages.
The only alternative is English names used in Wales at that time:
AliceEfa (evva =
Eva)
Agnes (annis)
IsabelAmabelElen (Helen/Eleanor)
JoanJulian/Gillian
RoseCristin
Emmot (
Emma)
Mariot (
Mary)
Margred
Amice (ammis)
Avice (avvis)
Lucy