Legh was elected to House of Commons for Cheshire North in 1841, a seat he held until 1847 and again between 1848 and 1868, when it was abolished and he was instead returned for the newly created Mid Cheshire constituency, which he represented until 1873.
Family
Legh married Louisa Charlotte, daughter of Edward Taylor, in 1828. There were no surviving children from their marriage. He died in June 1877, aged 72, and was succeeded in the family estate by descendants of his brother, later Barons Grey of Codnor.
References
^Burke, Bernard. A genealogical and heraldic history of the landed gentry of Great Britain and Ireland, Volume 2. p. 772. Google Books