I definitely prefer [name]Calliope[/name] - she’s just gorgeous!
As for why [name]Penelope[/name] is more common, I haven’t a clue.
Vote for [name]Calliope[/name]. It’s more unusual and I like it. [name]Penelope[/name] is too common to me, but [name]Calliope[/name] is rare and pretty.
love the nn [name]Callie[/name].