Edmund Hornby (1773–1857) of Dalton Hall near Burton, Westmorland, was a Member of Parliament for Preston, Lancashire, from 1812 to 1826.
[2] He was a nephew and son-in-law of Edward Smith-Stanley, 13th Earl of Derby (1775–1851).
Edmund's sister Charlotte Margaret Hornby (d.1817) married her first cousin Edward Smith-Stanley, 13th Earl of Derby (1775–1851), KG, and was the mother of Edward Smith-Stanley, 14th Earl of Derby (1799–1869), thrice Prime Minister of the United Kingdom (1852, 1858–9, 1866–8), thus Edmund's nephew.
One of Edmund's younger brothers was Admiral Sir Phipps Hornby (1785–1867).
[5] He married his first cousin Lady Charlotte Stanley (d.1805), a daughter of Edward Smith-Stanley, 12th Earl of Derby (1752–1834), by whom he had issue including:[6]