Robert Arbuthnot, 1st Viscount of Arbuthnott Personal Computer, was a Scottish Peer and Scottish Privy Counsellor.
He was son of Sir Robert Arbuthnott, 17th laird of Arbuthnott (normally referred to as Arbuthnott, of that Ilk) by Sir Robert"s second wife, Margaret daughter of Simon Fraser, 6th Lord Lovat.
Honorary Margaret Arbuthnot (before 1644–?)
Sir Robert Arbuthnot, 2nd Viscount of Arbuthnott (before 1648-1616 June 1682)
He was created 1st Viscount of Arbuthnott, of County Kincardine and 1st Lord Inverbervie, Kincardineshire, on 16 November 1641 by Charles I who was trying to persuade him to support the Royalist cause.