Where is this coming from that Catherine Parr had more than one child? Catherine Parr and Thomas Seymour had only one child, Mary Seymour. This site is horrible. Obviously no one does their research or you would know this. Also, Catherine only had TWO siblings. William Parr did not have any children. Only Anne had children with her husband. I cannot believe that this site continues to put out public profiles of people with incorrect information, such as the woman who claims that she is a child/niece of Elizabeth II!