By Wade Sheridan
May 14 (UPI) — Margot Kidder, the actress best known for portraying Superman’s love interest Lois Lane opposite the late Christopher Reeve, has died at the age of 69.
Kidder died Sunday at her home in Livingston, Mont., the Franzen-Davis Funeral Home and Crematory confirmed.
People magazine said her cause of death is unknown.
Kidder portrayed Lois Lane, the determined and strong-willed Daily Planet reporter who falls in love with Superman, starting with 1978’s Superman. She reprised the role three more times in Superman II (1980), Superman III (1983) and Superman IV: The Quest for Peace (1987).
Kidder started her career in television in the 1960s by guest starring on McQueen and The Mod Squad before landing a series regular role on Nichols which ran from 1971 to 1972.
Kidder appeared in films including Quackser Fortune Has A Cousin in the Bronx opposite Gene Wilder, Sisters, The Amityville Horror, Mob Story and The White Room, among others.
The actress suffered from mental health issues throughout her life that left her homeless in 1996. She was diagnosed with bipolar disorder and was taken to Olive View-UCLA Medical Center after going missing for several days.
She recovered and returned to television with guest-starring roles on The L Word, Brothers & Sisters and Superman series, Smallville. Kidder also appeared on Broadway, most notably in a 2002 production of The Vagina Monologues and took home an Emmy Award in 2015 for her role on R.L. Stine’s The Haunting Hour.
Kidder had two projects in pre-production leading up to her death. She last appeared in 2017 drama, The Neighborhood.
Kidder, a Canadian who became a U.S. citizen in 2005, is survived by her daughter, Maggie McGuane.