The seventh Lord was succeeded by his son, the eighth Lord. He was a Scottish Representative Peer from 1819 to 1831 and also served as Lord Lieutenant of Lanarkshire. In 1831 he was created Baron Hamilton of Wishaw, in the County of Lanark, in the Peerage of the United Kingdom, which gave him an automatic seat in the House of Lords. However, this title became extinct on his death in 1868 while the lordship became dormant. In 1875, the House of Lords decided that the rightful successor was James Hamilton, the ninth Lord. He was the son of Archibald Hamilton, grandson of James Hamilton, younger son of the aforesaid Robert Hamilton, Younger of Wishaw. Lord Belhaven and Stenton notably served as Lord-Lieutenant of Lanarkshire.