William Reierson Arbuthnot

William Reierson Arbuthnot (28 January 1826 – 31 May 1913) was a British businessman and legislator primarily operating in Madras.

The Arbuthnots were landowners and merchants of the Haddo-Rattray estate, Aberdeenshire, in Scotland for the previous two generations, and were formerly of Peterhead in that county.

George Arbuthnot worked for 22 years (1800–23) as a merchant in Madras, and was a magistrate, before retiring to England and acquiring Elderslie; he also resided at Upper Wimpole Street in London during the winter.

He was also Director of Commercial Union Insurance Co and of the Midland Bank Ltd.[3] On 9 December 1858, Arbuthnot married Mary Helen Anstruther, the eldest daughter of Philip Anstruther, the Colonial Secretary of Ceylon.

They lived at Plawhatch, Sussex, and had eight sons and six daughters; one of their sons, Major Kenneth Wyndham Arbuthnot (1873–1915), of the Seaforth Highlanders, was father of the politician Sir John Arbuthnot, 1st Baronet, of Kittybrewster.