Robert Walpole, 2nd Earl of Orford

Robert Walpole, 2nd Earl of Orford (1701 – 31 March 1751), was a British peer and politician, styled as Viscount Walpole from 1723 to 1745.

He was the eldest son of Sir Robert Walpole (1676–1745), the King's First Minister, now regarded as the first Prime Minister, by his first wife Catherine Shorter. In 1723 his father declined a peerage for himself but did accept the offer on behalf of his 22-year-old son Robert who was thus raised to the peerage as Baron Walpole, of Walpole in the County of Norfolk.

On c. 26 March 1724 Lord Walpole married the 15-year-old heiress Margaret Rolle (1709–1781), only surviving daughter of Samuel Rolle (1646-1719) of Heanton Satchville, Petrockstowe. Margaret was the heiress to a junior branch of the great Rolle family of Stevenstone in Devon and to her paternal grandmother, born Lady Arabella Clinton, a daughter and co-heiress of her brother Edward Clinton, 5th Earl of Lincoln, 13th Baron Clinton (d. 1692).

The marriage was not a success and Lady Walpole quarrelled violently with his whole family. After one son was born they lived apart and later obtained a legal separation.

In 1736 Hannah Norsa, a leading singer and actress at Covent Garden, moved to Houghton Hall in Norfolk and remained there as Walpole's mistress until his death in March 1751. Her financial support may have saved him from dying bankrupt. In Walpole's many absences Hannah Norsa was escorted in her landau and six horses by his chaplain, Rev William Paxton, who received the position as a small part of the Walpole family compensation for his father's defence of Walpole's father, the Prime Minister.

His estranged widow, Lady Walpole, became the 15th Baroness Clinton, succeeding in her own right after the death of Hugh Fortescue, 1st Earl Clinton (1696—1751). She had remarried on Walpole's death but soon separated from her second husband, Sewallis Shirley, a son of the 1st Earl Ferrers and comptroller of Queen Charlotte's household. She died at Pisa, in Italy, in 1781, and was buried at Leghorn, "a woman of very singular character and considered half mad".

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