I love
Evan --handsome and classic.
Evan Gabriel,
Evan Luke,
Evan Lucas,
Evan Robert and
Evan Paul come to mind.
I pronounce
Anya as AHN-yah, and love it
only as a nickname, for
Anna or some other
An- name.
Anya as a nickname for, say,
Anastasia is not technically correct, and would make any Russian cringe, but it's much better than
Anya as a full name.
Aine is an Irish name said the same way if you don't want it as a nickname.
Evan and
Anya clash rather spectacularly as siblings in my opinion.