| John | Oacks | Blackburn | LAN | Labowrer | 24 | 10 Sep 1779 | Died 28 Mar 1780 at Windsor | 448 |
| Joseph | Ockleston | Mottram | CHS | Sadler | 25 | 23 Jul 1779 | ---- | 81 |
| Abrm. | Ogden | Oldham | LAN | Weaver | 16 | 9 Aug 1779 | ---- | 284 |
| James | Ogden | Oldham | LAN | Stone Mason | 23 | 9 Jan 1782 | (See also 1560) | 1589 |
| Jas. | Ogden | Oldam | LAN | Stone Mason | 23 | 9 Jan 1782 | (Repeated later as 1589) | 1560 |
| Thos. | Ogden | Prestwich | LAN | Weaver | 25 | 21 Feb 1782 | (Repeated later as 1610) | 1572 |
| Thos. | Ogden | Prestwich | LAN | Weaver | 25 | 21 Feb 1782 | (See also 1572) | 1610 |
| James | Ogdin | Oldom | LAN | Stone Mason | 23 | 9 Jan 1782 | Made mark. Attd @ Salford. | 9011 |
| James | Oldham | Middleton | LAN | Weaver | 17 | 26 Jul 1779 | ---- | 124 |
| Richd. | Oldham | Manchester | LAN | Musician | 21 | 11 Oct 1780 | (Entry no 611: error for 511?) | 611 |
| John | Olley | Heddingham | ESS | Labourer | 18 | 19 Feb 1782 | Made mark. Attd. @ Bocking. | 9015 |
| John | Olley | Sevil Heddingham | ESS | Labourer | 17 | 19 Feb 1782 | (Repeated later as 1607) | 1569 |
| Jams. | Ollingworth | Othregam | LAN | Blacksmith | 16 | 30 Jul 1779 | Discharg'd 25 Apr 1781 at Ipswich | 185 |
| Jno. | Olly | Sevil Heddingham | ESS | Labourer | 17 | 19 Feb 1782 | (See also 1569) | 1607 |
| William | Ormby | Manchester | LAN | Velvet Dresser | 19 | 21 Jul 1779 | ---- | 33 |
| Thos. | Ormerod | Over Darwen | LAN | Waver | 18 | 10 Aug 1779 | Discharg'd 18 Jan 1782 at Epping | 415 |
| James | Ormond | Middlewich | CHS | Whitesmith | 18 | 16 Sep 1779 | ---- | 482 |
| William | Ormond | Manchester | LAN | Taylor | 18 | 23 Jul 1779 | ---- | 77 |
| John | Osbaldiston | Blackburn | LAN | Innkeeper | 40 | 23 Aug1779 | ---- | 402 |
| John | Owen | Manchester | LAN | Weaver | 18 | 23 Jul 1779 | Died at Salt Hill Feby. 2 1783 | 76 |
| Peter | Owen | Manchester | LAN | Hatter | 17 | 20 Jul 1779 | ---- | 18 |
| Thomas | Owen | Carrington | CHS | Sail Clothmaker | 21 | 21 Jul 1779 | ---- | 92 |