Peter Mottice is the oldest known Mottice ancestor. Information further back is sketchy, and indeed some of Peter's family details are subject to conjecture. The following is compiled from a variety of sources:
| Born | Place | Died | Spouse | Marriage | Notes | |
| Peter Mottice | 1772 | NJ | 1855 | link | ||
| 1st wife: Pheby | 1774 | 1823 | 1795 | link | ||
| Children: | ||||||
| Margaret | 1795-1799 | PA | 1817-1820 | John Creighton | 1816 | link |
| Abigail | 1795-1799 | PA | 1858 | John Creighton | 1821 | link |
| John B. | 1800 | PA | 1878 | Elizabeth Cachel | 1828 | link |
| Mahala | Abt. 1805 | Bef. 1836 | Thomas Davis | link | ||
| Sarah | 1816 | OH | 1880 | |||
| 2nd wife: Mary Sibert | 1789 | 1846 | 1826 | link | ||
| Children | ||||||
| James B. | 1832 | OH | 1889 | Sarah Marks | 1854 |