Tessa Grey

Theresa Herondale-Carstairs (born Grey) is an American Warlock, a special kind - half-shadowhunter and half-Eidelon Demon. She is the wife of both Jem Carstairs and Will Herondale. With Jem, she has one daughter, Mina and an adoptive son Kit. With Will, she had three kids, Lucie, Charlotte and James. Only Charlotte, Mina and Kit are still alive.