Sonny2639 on Family Tree Circles

Hello,
Dauphin County Pennsylvania
Oldest relative I have found is William Duncan b. 1824 to abt 1896 married to Catharine 1828-71 with children John 1848-60, Hiram 1849-60, William b 1848 married to Mary Ann, Margaret b. 1855, David 1857-71, Alice b. 1860, Katy 1864-65, Grant 1866-67, Miren 1869-70. Appears he then married Sarah 1841-94 and had Anna b. 1869 and Flora b. 1876. Have now hit dead end...Any help will be Greatly Appreciated.
Sonny Duncan