His eldest son, the fifth Earl, briefly represented Warwick in the House of Commons but in 1711 he was summoned to the House of Lords through a writ of acceleration in his father's junior title of Baron Compton. He married Elizabeth, 15th Baroness Ferrers of Chartley. They had no sons and Lord Northampton was succeeded in the barony of Compton, which could be passed on through female lines, by his daughter Lady Charlotte. The earldom passed to his younger brother, the sixth Earl. He had earlier represented Tamworth and Northampton in Parliament.