William married Sarah Spring 17 Oct 1824, Swavesey, Cambridgeshire, England. Sarah (daughter of Samuel Spring and Sarah Jane Green) was born 1804, Swavesey, Cambridgeshire, England; died 25 Jun 1871, Over, Cambridgeshire, England. [Group Sheet]

1. William Thoday was born 1825; died 1860.
2. Hannah Thoday was born 1827; died 27 Jun 1900.
3. Henry Thoday was born 1831; died 1914.
4. Samuel Thoday was born 1834; died 1883.
5. Alice Thoday was born 17 Aug 1835; died Dec 1897.
6. Mary Thoday was born 1829.