Thomas Mainwaring was born circa 1437 in Over Peover, Cheshire, England, United Kingdom to William Mainwaring (c1396-1499) and Margaret Warren (c1400-1437) and died 1508 Over Peover, Cheshire, England, United Kingdom of unspecified causes. He married Jane Sutton (c1434-1476) 1465 JL in England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| Cecily Mainwaring (1468-1507) | 20 March 1468 Ightfield, Shropshire, England | 24 August 1507 Cotton, Shropshire, England | John Cotton (c1464-1508) |
| John Mainwaring (1478-) | |||
Siblings
| Name | Birth | Death | Joined with |
| Margery Mainwaring (c1433-1460) | 1433 Ightfield, Shropshire, England, United Kingdom | 1460 Egerton, Cheshire, England, United Kingdom | Philip Egerton (c1430-1474) |
| Thomas Mainwaring (c1437-1508) | 1437 Over Peover, Cheshire, England, United Kingdom | 1508 Over Peover, Cheshire, England, United Kingdom | Jane Sutton (c1434-1476) |
Residences
Footnotes (including sources)