Earl of Londonderry

He had already been created a Baronet, of Torrington in the County of Devon, in 1611,[1] Lord Ridgeway, Baron of Gallen-Ridgeway, in the Peerage of Ireland, in 1616, and was made Viscount Gallen-Ridgeway at the same time as he was granted the earldom, also in the Peerage of Ireland.

He had already been created Baron Londonderry in 1719 and was made Viscount Gallen-Ridgeway at the same time as he was granted the earldom, also in the Peerage of Ireland.

He was the husband of Lady Frances Ridgeway, daughter and heiress of the fourth Earl of the first creation.

His younger son, the third Earl (who succeeded his elder brother), represented Camelford in Parliament.

The third creation came in 1796 in favour of Robert Stewart, 1st Viscount Castlereagh, already created Baron Londonderry in 1789.

Arms of Ridgeway, Earls of Londonderry: Sable, a pair of wings conjoined and elevated argent
Arms of Pitt, Earls of Londonderry: Sable, a fesse chequy argent and azure between three bezants
Arms of Stewart, Earls and Marquesses of Londonderry: Or, a bend counter-compony argent and azure between two lions rampant gules