Arms: Quarterly: 1st, Or a Fess chequy Argent and Azure (Stewart); 2nd, Azure three Garbs Or (Buchan); 3rd, Sable a Mullet Argent (Traquair); 4th, Argent an Orle Gules in chief three Martlets Sable beaked of the second (Rutherford).
Crests:On a Garb Or a Crow proper.
Supporters:On either side a Bear proper armed Argent
Stewart had been created Lord Stewart of Traquair in 1628, and was made Lord Linton and Caberston at the same time as he was given the earldom in 1633. These titles were also in the Peerage of Scotland. The titles became extinct or dormant on the death of the 8th Earl of Traquair, Charles Stewart (b. 1781), 2 August 1861.