I prefer Romilly by a margin - Romelia makes me think of Eastern Rumelia.
Romilly
ClaraRomilly
CoraRomilly
EsméRomilly
FreyaRomilly
HazelRomilly
IngridRomillyI
Tamsin
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080