Townsend LAMBORN is not the father of your Lewis.Townsend LAMBORN had the following children by his first wife, Ann CLAYTON:
423 Lamborn, Aaron Clayton, b 3-7-1804; [m 5-15-1828 Sarah Entrikin, b 7-18-1804]; farmer.
424 Israel, b 6-8-1807, d 2-17-1891; [m twice: first 2-5-1835 Lydia, dau Abram and Sarah Marshall, b 11-25-1811; second Katherine Ritner].
425 Clayton, b 8-28-1808; [m 5-1-1839 Hannah, dau Isaac and Margaret Test, b 1-27-1811].
426 Sarah, b 7-24-1810, d 10-24-1811.
427 Ann Jones, b 11-25-1811 ; [m 5-1-1837 Samuel Test]; no issue.
428 Joseph Townsend, b 3-3-1813; [m 1-10-1849 Phebe Ann (Davis), dau John and Esther S. House, b 4-15-1813, d 6-17-1890].
429 Richard Jones, b 4-5-1815, d 1-13-1887 ; [m 2-15-1856 Hannah Stroud].
430 Robert Bailey, b 10-27-1817; [m 5-1-1855, Ellen Lewis].
431 Lydia, b 12-1-1819 ; [m 5-28-1857 Gregg Clayton]; no issue.
432 Hannah Maria, b 10-31-1822 ; [m Daniel Stranglin]; no issue.
433 Levi Leslie, b 10-10-1829; [m 8-24-1849 Maria, dau Stacey Grant, b 1832].
Ch by second wife (Margaret SAMPLES). 434 Humphrey, b 10-21-1835 [m 7-19-1859 Josephine C., dau John and Margaret (Young) Turner b 10-3-1841].
435 Marshall; [m Caroline dau Susan and William Clark].
Israel, Clayton, Humphrey and Marshall are the only ones who do not have middle names listed.Israel and Clayton were not born close to 1835.Humphrey and Marshall were still living in Pennsylvania in 1900.
Sorry.I would've liked to have found a new cousin.
Good Luck, Jon
The information above is taken from the Lamborn Genealogy by Samuel Lamborn (1894)