Fresh 43+ Children Catherine O Hara Family. Canadian actress, writer, and comedian, catherine o'hara gained recognition as one of the original cast members on the catherine o'hara has an almost religious cult following around the world. O'hara was born and grew up in toronto, ontario, into a large family of irish descent.2 she was raised catholic and is the sixth of seven children.3 she attended. Catherine o'hara and her husband bo welch eventually started a family, welcoming their first son.