| Father | Conn First Lord Of Tyrone ("The Lame") O'Neil (b. 1471, d. 1497) |
| Mother | Mary McDonnell (b. 1450, d. 1488) |
| Son | Feidhlimidh O'Neil+ (b. 1490, d. 1550) |
| Pedigree Chart |
| Marriage | Niall Mor Prince Of Clanaboy O'Neil and Gormfhlaith Okonell were married. | |
| Birth | 1465 | He was born in 1465 in Down, Down, IrelandBG. |
| Death | 11 April 1512 | He died on 11 April 1512 at age ~47 in IrelandBGO. |
| Last Edited | 24 June 2018 |