A descendant of the seventeenth century Framlingham wool merchant and draper Francis Kilderbee, this Member was the only son of the wealthy Suffolk cleric and patron of the arts Samuel Kilderbee, and heir by birth and designation of his paternal grandfather, the Ipswich attorney and town clerk Samuel Kilderbee (d. 1813), who had prospered as the agent of the Tory Rous family of Henham Hall.
Kilderbee was counted among the Wellington ministry’s ‘friends’ and divided with them on the civil list when they were brought down, 15 Nov. 1830. He voted against the Grey ministry’s reform bill, by which Aldeburgh and Orford were to be disfranchised, at its second reading, 22 Mar., and for Gascoyne’s wrecking amendment, 19 Apr. 1831, and retained his seat at the general election that month.
A founder and lifelong member of the Carlton Club, Kilderbee, who assumed the name de Horsey in April 1832, as co-heir with his half-brother John to the estate of his maternal grandfather (d. 1771), was not a candidate at the 1832 and 1835 general elections, but came in for Newcastle-under-Lyme as the second Conservative in 1837. Nothing came of his endeavours at Barnstaple and Leicester in 1841 and he did not stand for Parliament again.
