Past holders have also held the titles Baron Walpole of Houghton in the County of Norfolk, Viscount Walpole and Earl of Orford (second creation; 1742 to 1797), and Earl of Orford (third creation; 1806 to 1931).
On Sir Robert's retirement from the House of Commons in 1742, he received the titles Baron Walpole of Houghton in the County of Norfolk, Viscount Walpole and Earl of Orford, with the standard remainder.
[n 1] The title of Baron Walpole of Wolterton in the County of Norfolk was created in the Peerage of Great Britain in 1756 for Horatio Walpole, envoy to Paris and later The Hague, and younger brother of Sir Robert.
Lord Orford never married and on his death the barony of Clinton became dormant (see the Baron Clinton article for later history of this peerage), while the other titles were inherited by his uncle, the 4th Earl, at birth known as Horace Walpole, who was a politician and early expounder of the Neo-Gothic in architecture and the Gothic novel.
Horatio the younger's son sat as Member of Parliament for Wigan and King's Lynn before coming into his earldom.
His grandson, the 4th Earl, briefly represented Wigan in the House of Commons.