Out of curiosity I checked for
Abel on aufeminin.com, they have these names listed but none of them are popular (they have been used maybe 10 times or so in the last 50 years or something like that).
ABEL ( Mixte )
ABELIA ( Fem. )
ABELINA ( Fem. )
ABELINE ( Fem. )
ABELLA ( Fem. )
ABELLE ( Fem.