There is no mention of the name Wendy ever meaning gay. Wendy may have been a slang term used regionally to mean someone who was homosexual, however it does not have widespread recongnition.
Wendy Lanuza's birth name is Wendy Marissa Lanuza.
Wendy Sims's birth name is Wendy Crawford.
Wendy Pini's birth name is Wendy Fletcher.
Wendy Waldman's birth name is Wendy Steiner.
Wendy Westerfield's birth name is Wendy Moreira.
Wendy Dio's birth name is Wendy Galaxiola.
Wendy Danno's birth name is Wendy Faith Mayer.
Wendy Kesselman's birth name is Wendy Ann Kesselman.
Wendy Cutler's birth name is Wendy Ellen Cutler.
Wendy Bott's birth name is Wendy Luckett Bott.
Wendy Brainard's birth name is Wendy M. Brainard.
Wendy Wygant's birth name is Wendy Anne Wygant.