MP Horsham is in Member Parliament.
In 1529 Henry Hussey of Slinfold [aged 34] was elected MP Horsham.
In 1545 Anthony Wingfield [aged 58] was elected MP Horsham.
In March 1553 Henry Hussey [aged 34] was elected MP Horsham.
In 1614 Thomas Vavasour [aged 54] was elected MP Horsham.
In 1628 Dudley North 4th Baron North [aged 26] was elected MP Horsham.
In 1661 John Covert 1st Baronet [aged 40] was elected MP Horsham which seat he held until his death in 1679.
In 1669 Orlando Bridgeman 1st Baronet [aged 19] was elected MP Horsham.
In 1705 Charles Eversfield [aged 21] was elected MP Horsham which seat he held until 1710 when he was returned for Sussex and Horsham and chose to sit for Sussex.
On 12th June 1721 Charles Eversfield [aged 37] was elected MP Horsham which seat he held until 1741.
In 1741 Richard Mill 5th Baronet [aged 51] was elected MP Horsham unopposed.
In 1780 George Legge 3rd Earl Dartmouth [aged 24] was elected MP Horsham and MP Staffordshire. He chose to sit for the latter which he represented until 1784.
On 30th November 1780 George Osborn 4th Baronet [aged 38] was elected MP Horsham at a by-election.
In 1804 James Edward Harris 2nd Earl Malmesbury [aged 25] was elected MP Horsham.
In 1812 John Aubrey 6th Baronet [aged 72] was elected MP Horsham which seat he held until 1820.
In 1827 Nicholas William Ridley-Colborne 1st Baron Colborne [aged 47] was elected MP Horsham which seat he held until 1832.
In 1848 Edward George Fitzalan Howard 1st Baron Howard [aged 29] was elected MP Horsham.
In 1880 Henry Aubrey-Fletcher 4th Baronet [aged 44] was elected MP Horsham which seat he held until 1885.