His father was the third son of Robert Arbuthnot, 1st of Haddo-Rattray, and the former Mary Petrie. His maternal grandparents were John Urquhart of Craigston and Cromarty and Jane Urquhart (a daughter of William Urquhart of Meldrum and Mary Forbes).[3]
Traditionally a knighthood was conferred on Lord Provosts[citation needed], but Arbuthnot was created a baronet on 24 August 1822 (by Letters Patent on 3 April 1823) on the occasion of a banquet given by the Magistrates and Town Council of Edinburgh in honour of King George IV during his visit to Edinburgh.[6][8]
In his capacity as Lord Provost he opened the Edinburgh School of Arts on Adam Square on 16 October 1821.[9]
Sir William matriculated Arms with the Lord Lyon King of Arms in 1822.[10] Unusually, for a baronet, the arms include supporters, probably because he had accomplished two stints as Lord Provost.[11]
Personal life
On 13 September 1800, Arbuthnot married Anne Alves (d. 1846), daughter of Helen Baillie and John Alves of Shipland. They had ten children, including:[3]
George Clerk Arbuthnot (1803–1876), who married Agnes Rait, daughter of John Rait in 1837. After her death, he married Caroline Ramsay Hay, daughter of James Hay and Lady Mary Ramsay (a daughter of the 8th Earl of Dalhousie), in 1845.[3]
Archibald Francis Arbuthnot (1805–1879), who married Hon. Gertrude Sophia Gough, daughter of the Hugh Gough, 1st Viscount Gough in 1837.[3]
William Urquhart Arbuthnot (1807–1874), who married Eliza Jane Taylor, daughter of Gen. Sir Henry George Andrew Taylor, in 1834.[3]
James Edward Arbuthnot (1809–1868), who married Harriet Frances Staveley, daughter of Gen. William Staveley, in 1837.[3]
Henry Dundas Arbuthnot (1811–1847), who died unmarried.[3]
Mary Arbuthnot (1814–1838), who died unmarried.[3]
Elizabeth Helen Arbuthnot (1819–1825), who died young.[3]
Ann Arbuthnot (1822–1900), who married Lt.-Col. Hugh Inglis, son of George Inglis of Kingsmill and Helen Alves, in 1849.[3]
Sir William died on 18 September 1829. He was buried in St John's Episcopal Churchyard in Edinburgh at the west end of Princes Street.[2]