I am Mary and Peter's great grand daughter. I am the daughter of Linda, their only grand child, I believe because I know of only one daughter that they had and she died when my mother was a baby and her father (Richard Summerall), ran off. Peter and Mary raised my mother. I believe they were married in Nicaguara. My Mama talks alot about traveling there when she was a child. I am sorry to say that I do not know my Grandmother's name. Can you tell me it, please?