Here's what I see: In the 1850 census, Isaac Straub has a son, Samuel , who is 9. (Born 1841-2) In the 1850 census (Chapman Twp), Anna Maria Straub (husband has probably died) has a son, Samuel, who is 12. (Born 1838-9) In the 1860 census, Samuel is 21. (Born 1839-40)