In 1529 Henry Hussey of Slinfold (age 34) was elected MP Horsham.

In 1545 Anthony Wingfield (age 58) was elected MP Horsham.

In Mar 1553 Henry Hussey (age 34) was elected MP Horsham.

In 1614 Thomas Vavasour (age 54) was elected MP Horsham.

In 1628 Dudley North 4th Baron North (age 26) was elected MP Horsham.

In 1661 John Covert 1st Baronet (age 40) was elected MP Horsham which seat he held until his death in 1679.

In 1669 Orlando Bridgeman 1st Baronet (age 19) was elected MP Horsham.

In 1705 Charles Eversfield (age 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 12 Jun 1721 Charles Eversfield (age 37) was elected MP Horsham which seat he held until 1741.

In 1741 Richard Mill 5th Baronet (age 51) was elected MP Horsham unopposed.

On 30 Nov 1780 George Osborn 4th Baronet (age 38) was elected MP Horsham at a by-election.

In 1804 James Edward Harris 2nd Earl Malmesbury (age 25) was elected MP Horsham.

In 1812 John Aubrey 6th Baronet (age 72) was elected MP Horsham which seat he held until 1820.

In 1827 Nicholas William Ridley-Colborne 1st Baron Colborne (age 47) was elected MP Horsham which seat he held until 1832.

In 1848 Edward George Fitzalan Howard 1st Baron Howard (age 29) was elected MP Horsham.

In 1880 Henry Aubrey-Fletcher 4th Baronet (age 44) was elected MP Horsham which seat he held until 1885.