thumb|right|William Henry Hornby

William Henry Hornby (1805–4 September 1884) an English cotton spinner, industrialist and politician. He became the first Mayor of Blackburn in Lancashire and national chairman of the Conservative Party.

Life

He was the son of the cotton spinner John Hornby (1763–1841) and his wife Alice Kendall Backhouse, daughter of Daniel Backhouse, born in Blackburn.

During the 1820s the Hornby family business, a partnership with John Birley, expanded with the construction of a cotton spinning mill out of the centre of Blackburn, in the Brookhouse area on the River Blakewater. The original water mill was phased out, with power looms introduced in 1830, and a steam engine in 1841. The partnership with Birley ended in 1830, and William Henry Hornby brought in new partners.

Family

Hornby married in 19 May 1831 Margaret Susannah Birley, daughter and sole heir of Edward Birley of Kirkham. They had seven sons and four daughters.