Ruby Belnap (aka Rose Marie or Rosemarie) is a retired American porn star and model. Before doing adult modeling and doing porn, she was a housewife and mother of three children. After her then-husband suffered a heart attack in 1983, she began doing nude modeling, porn loops and movies to support her family. She appeared in several softcore and hardcore magazines, most notably Hustler (July 1983). She was known for often doing anal scenes. One of her earliest movies was the high profile Caught from Behind 2. Other notable movies she appeared in where she was prominently featured are X-team and Cupid's Arrow. She made her last movies in 1992 before retiring. In 2006, Alpha Blue Archives released a compilation of her scenes called Rose Marie Collection.