Robert Walpole from 1756 styled The Hon. Robert Walpole, was the 4th son of the 1st Baron Walpole, the younger brother of Robert Walpole

Robert Walpole

Robert Walpole, 1st Earl of Orford, KG, KB, PC , known before 1742 as Sir Robert Walpole, was a British statesman who is generally regarded as having been the first Prime Minister of Great Britain....

, the Prime Minister. He served as an extra clerk of the Privy Council from 1749 until 1764, when he replaced Henry Fane as one of the Clerks in Ordinary

Clerk of the Privy Council (United Kingdom)

The Clerk of the Privy Council is a civil servant in the government of the United Kingdom. He or she is the most senior civil servant in the Privy Council Office....

. After serving as secretary of the British embassy in Paris, he was envoy extraordinary and minister plenipotentiary to Portugal

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 from 1771 to 1800. One of his sons was Major-General George Walpole

George Walpole

The Right Reverend George Henry Somerset Walpole, DD, MA was an eminent Anglican priest and author.Walpole was born in 1854 and educated at Trinity College, Cambridge. He began his career as curate at St Mary’s Truro. He was the incumbent of St...

 (1758–1835), under-secretary for foreign affairs in 1806.

Walpole was married twice: first, on 8 May 1780, to Diana Grosset (died 24 July 1784); and second, on 10 May 1785, to Sophia Stert (died 12 June 1829). He had issue by both wives.