I was thinking about
Ingrid and
Inge a few days ago. I like how they're kind of strong/emphatic sounding without being harsh...also something about
Inga seems hip? And it sounds very Northern European to me (not really a negative/positive thing, but that might discourage me personally from using it).
Dominga is cool; I've never heard that before.
I think
Inga &
Margie is an interesting sibset, but I don't like the sound of
Margie (or
Marjorie - I prefer Marg* names pronounced with a hard G), so I'd prefer
Inga and
Margot /
Margaret. Or something like
Dominga and
Margareta /
Margarida /
Marguerite.