| First Name (With Contractions) | Mary |
| First Name (Without Contractions) | Mary |
| Surname | Obin |
| Married Surname | Costain |
| Spouse's Occupation (As Documented) | Shipwright |
| Spouse's Occupation (Standardised) | Shipwright |
| Gender | Female |
| Abode | Liverpool |
| Year | 1799 |
| Parish | St Nicholas, Liverpool, Lancashire |
| Date Of Marriage | 25 Nov 1799 |
| Status | Spinster |
| Witnesses | Edward Coventry; Thos. Howard |
| Marriage Type | Licence |
| Marrying Minister | Thomas Kidd, Curate |
| Register | Marriages 1799 - 1801, Page 43, Entry 403 |
| Source | LDS Film 93839 |
| Witnessed By | Edward Coventry |
| Witnessed By | Thos. Howard |
| Married To | William Costain |