OK, so in addition to the three above. The others I have scouted out, include:
Andrea who posts to the
Firebird's Marvel Fanfiction site.
She has written a series called
Pegasus Flight, based in the X-Men universe.
However, she has written the story from the perspective of a new character - Margaret Eleanor Johnson a.k.a. Peggy – a girl who can transform into a Pegasus (with telepathic communication abilities).
Peggy is the daughter of one Dr. Johnson, a member of the Friends of Humanity, ends up being adopted by Scott Summers and marrying Iceman!