John, I would not assume that all the children in the 1841 household belong to Jane/Jean Dunn. While the "rounding down" instructions for adults for that census means Jean's age would be 25-29, she would have been too young to have a 13-yr-old son. Peter could have been the child of John & Thomason or, if a grandson, the child of any of their other older children, male or female. Do you know if there is an existing memorial inscription for this family's gravesite? If there is, it might help with the relationships. Jo-Ann Croft