Guess what? Looking at the postings I just sent to you, I suddenly realized you had mixed up the two wives and confused me - Mary Mattatall was really Thomas Amon's (1st) wife and Rebecca McNeill was his (2nd) wife, not the other way around, because Mary had her children in years 1856, 1859, and 1862 (can you fill in any other dates when they were born?), then Rebecca had all her children from 1869 and 1896. This means that Mary must have died sometime ca. 1867, and Thomas then married Rebecca who had her first child by him in 1869. So Mary must have had her 4 children who have no years of birth listed by you sometime in the 1850's and 1860's, and Mary died after having 7 children who did not die in childbirth or as young children. After Mary died, Rebecca had 13 children over the next 27 years. So Thomas sired 20 children in the 40 years betwween 1856 and 1896 !! In those days, a woman would get pregnant, carry her child, then give birth and breastfeed her child, all of which would take about 2 years, then she would get pregnant again! It is likely that Mary's 4 children with no years of birth must have been born every second year apart (i.e. ca 1858, 1860, 1864, 1866) and we can fit into the list her other 3 children you have shown (b. 1856, 1859, and 1862). This likely means that Thomas and Mary were married sometime about 1854 or 1855, because the first child (b. 1856) usually arrived 12 to 18 months after marriage. And Thomas and Rebecca probably married ca. 1867 or 1868, which means Mary likely died ca 1866 (maybe in childbirth of her final child) or soon after in 1867. It's all very scientific!