Rosemary Dunsmore (born July 13, 1952) is a Canadian stage, film and television actress, director, , and educator, best known for playing Aunt Abigail MacEwan on the television series "The Road to Avonlea". Rosemary Dunsmore (born July 13, 1952) is a Canadian stage, film and television actress, director, , and educator, best known for playing Aunt Abigail MacEwan on the television series "The Road to Avonlea".