There is no Saint Wendy.
Although there isn't a saint called, "St. Wendy", It's short for "Gwendolyn".
St. Gwendolyn:
Feastday: October 18
5th century
Widowed martyr sometimes called Blanche, Wenn, or Candida. She was the daughter of a Chieftain, Brychan or Brecknock. Saxon pagans martyred Gwen at Talgrarth.
Wendy's does not have a patron saint and McDonald's, KFC and other fast food places do not have patron saints either.
Nana. Wendy, Micheal and John's dog Nana is a Saint Bernard.
Saint Thomas; Saint Lucia; Saint Helena; Saint John; Saint Croix; Saint Martin; Saint Pierre; Saint Vincent; Saint Paul; Saint Barthelemy; Saint Kitts
Saint Noel Chabanel is a saint but not a patron saint.
Saint Aleth of Dijon (Alice) is a saint but not a patron saint.
*Saint Anne; Saint Anthony of Padua; Saint Dominic of Silos; Saint Elizabeth; Saint Gerard Majella; Saint Joseph
Babylas is a saint but not a patron saint.
Kiara is a saint but not a patron saint at this time.
Mellon is a saint but not a patron saint.
Saint Cocca is not a patron saint.
Yes, Saint Peter is really a saint. If he were not a saint he would not have that title.
Yes, Saint Damian, the brother of Saint Cosmas, is a Catholic saint.