Schitt's Creek star Catherine O'Hara shared two sons Matthew and Luke Welch, with husband Bo Welch before her death at age 71 in January 2026. A Los Angeles Fire Department spokesperson confirmed to Us Weekly on January 30, 2026, that paramedics were called to Catherine's Brentwood home that morning for a medical aid call and she was transported to a local hospital in "serious condition." Us reported that O'Hara died following a "brief illness" but no official cause of death has been determined at this stage.