- born about 1797 in Calverley, Yorkshire, England,
- occupation Slater. (Roof Tiler, Shingler, Slater)
- He married Martha, surname unknown.
- Martha was born about 1809 in Bradford, Yorkshire, England. Surname Jennings?
- 1841 Census of Idle: William THORNTON aged 40 Slater born Yorkshire [complete entry]
- 1851 Census of Eccleshill:
William THORNTON aged 54 Slater born Calverly [complete entry]