Hello, Yes, Prettyman Berry is the son of Richard and Fanny Berry. Lucy Cain is also one of Richard and Fanny's children (she married William Cain). There are other children too. We have alot of information on this. If you would like to contact me, my address is bjberrykeeper@yahoo.com I can send you more information if you like. There are documents that specifically state that Prettyman is the son of Richard and Fanny. Lots of documentation. I love to share. Contact me and I will send you a ton of information. Nice to meet you. bj berry