Maryse Lightwood is the mother of all the Lightwood children, Alec, Isabelle and Max, and the adoptive mother of Jace. Her husband is Robert Lightwood.
Maryse Lightwood is a Shadowhunter, who was once part of The Circle, and elite group selected by Valentine Morgenstern. She, like her daughter, has dark hair however has blue eyes. It is often said that Isabelle resembles Maryse closely, for instance, Jocelyn mistook Isabelle for her mother.
No-one has yet been cast for the role of Maryse Lightwood.
Maryse Lightwood does not make an appearance in The City of Bones, as she is attending The Accords signing in Idris, along with her husband and youngest son, Max.
Maryse is often referred to in the first book by Alec, Isabelle and Jace, Jace stating that she is one of the best cooks in the world, and that was something that Isabelle did not inherit from her. At the start of City of Ashes, she appears with her son back at the New York Institute, which she runs under the supervision of the Clave.