Catherine or Katherine -
Katharine is actually my favorite, followed by
Catherine.
Liliana or Lilyana -
Liliana.
Madeline or Madelyn -
Madeleine, though
Madeline between these two.
Madelyn looks like an American bastardization.
John or Jon -
John is the only acceptable spelling as a given name.
Jon as a nickname for
Jonathan.
Vivian or Vivienne - Either, though probably
Vivian. (
Vivien is my favorite here.)
Sophia or Sofia - Either, though probably
Sophia, depending on cultural background.
Julia or
Giulia -
Julia, definitely.
Briana or Brianna -
Brianna, though I don't care for either.
Elliott or Eliot - Split the difference with
Elliot.
Brian or Bryan - Either, though I dislike this name intensely.
Elizabeth or Elisabeth - Either, though Elizabeth.
Ann or Anne - Definitely Anne.
Calliope or Kalliope - Calliope is much more aesthetically pleasing, I think. (It was also the first spelling I encountered, actually - I'm pretty sure Calliope predated Kalliope on this website.)
Andrew
put a smile on your face - make the world a better place (: