Very sweet..as long as they are just nicknames!
I like
Dorothea &
Augusta, perfect together...Dorothy and
Augustine feels very missmatched. I'd prefer
Dorothy &
Augusta or
Dorothea &
Augustine. Or even better,
Theodora &
Augustine! That seems more even.
I knew a little girl once who went by
Dot, because that was her intials (D something,
Olive Therese) so thats a possibility-
DOT and
GUS initials.
That's all I got :)