[4] The youngest son of General Sir C. W. Doyle, he was first attached to the British Mission in Washington in 1825.
[4] In 1831 in Madrid he visited one of his father's close friends, José de Palafox.
[4] He was appointed on 6 December 1842 Secretary of Legation to Mexico[6] and was appointed on 4 January 1843 British Chargé d'Affaires to Mexico[7] but diplomatic relations were broken off later in that year because of an incident involving Antonio López de Santa Anna.
[4] Doyle’s collection of Mexican antiquities, made ‘during his residence in that republic’, was sold at auction by Sotheby’s on 3/4 January 1859 for a total of £382.
No longer employed, but with a good pension, he seems to have been a ‘man about town’ on the fringes of the royal family, frequenting the theatre, court levées and other society occasions.