Richard Handcock, 2nd Baron Castlemaine (1767–1840), his son, Irish MP for Athlone 1800–1801
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Richard Handcock, 4th Baron Castlemaine (1826–1892), his son, Irish representative peer, Lord Lieutenant of Westmeath
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Richard Handcock, 3rd Baron Castlemaine (1791–1861), his son, British MP for Athlone 1826–1832, Irish representative peer