Okay, so I am watching Sister Act at the moment, and all or at least most of the nuns are Sister Mary. When Carmella was a nun in Neighbours, she was also Sister Mary. So I thought, all nuns must have to be that, but the ones in Sound of Music aren't.. so I was just wandering, why most nuns are Sister Mary lol! Is it an old tradition or something lol? Is it cause of Mary and Joseph.. lol..