Career
He was created baronet, of Harley Street in the County of Middlesex, on 31 July 1798. Although he lived in England, he came from a Scottish family. Robert went on to be the Member of Parliament for Mitchell and a judge.
On 11 June 1788, Dallas married Margaret Catherine Blackwood, the daughter of Sir John Blackwood, 2nd Baronet and Dorcas Stevenson, Baroness Dufferin and Clandeboye.
Their son was Sir Robert Charles Dallas, 2nd Baronet (23 December 1804 - 2 August 1874). Their daughter, Marianne Dallas, married Sir Peter Parker, 2nd Baronet.