I know a
Ceinwen, who says it KINE-wen. She's pretty awesome which colours my perception of the name.
Ceinwen EvaCeinwen Tara (TAH-ra)
Ceinwen CassandraCeinwen Helene (el-EN - French prn)
Ceinwen Therese/Theresa
Ceinwen BridgetCeinwen Aoife (mixing my Celts!)
Ceinwen RitaCeinwen PollyannaCeinwen JosephineCeinwen Jessamine
I'm really out of practice at this! But
Ceinwen was easy even so, I guess it flows with lots of different emphasis structures.