Is Catherine o'hara maureen o'hara's daughter?

No, Catherine O'Hara is not Maureen O'Hara's daughter. They are both accomplished actresses, but they are not related. Catherine O'Hara is known for her work in comedy and film, particularly in "Schitt's Creek," while Maureen O'Hara was a prominent actress in classic films, known for her roles in movies like "The Quiet Man."