George Thomas , Earl of Albemarle , '' Memoirs of the Marquis of Rockingham and his contemporaries '' , 149 - 151 In 1768 he succeeded his cousin Horace Walpole as MP for Lynn , sitting until 1784 , when he was succeeded by his nephew Horatio Walpole .
George Thomas , Earl of Albemarle , '' Memoirs of the Marquis of Rockingham and his contemporaries '' , 149 - 151 In 1768 he succeeded his cousin Horace Walpole as MP for Lynn . 
 He remained MP for Lynn until 1784 , when he was succeeded by his nephew Horatio Walpole .