Richard Handcock, 3rd Baron Castlemaine (17 November 1791 – 4 July 1869) was an Irish peer and Tory politician.
[citation needed] Castlemaine was returned to Parliament for Athlone in 1826, a seat he held until 1832.
[1][2] He succeeded his father in the barony in 1840 and was elected an Irish representative peer in 1841.
[3][4] Lord Castlemaine married Margaret, daughter of Michael Harris, in 1822.
Lord Castlemaine survived her by two years and died in July 1869, aged 77.