Macartney chose George Staunton as his right-hand man, whom he entrusted to continue the mission should Macartney himself prove unable to do so. Staunton brought along his son, Thomas, who served the mission as a page. John Barrow (later Sir John Barrow, 1st Baronet) served as the embassy's comptroller. Joining the mission were two doctors (Hugh Gillan and William Scott), two secretaries, three attachés, and a military escort. Artists William Alexander and Thomas Hickey would produce drawings and paintings of the mission's events. A group of scientists also accompanied the embassy, led by James Dinwiddie.