 Complete the following phrase:  William Erskine, second son of Walter Erskine, 11th Earl of Mar, was educated at Eton College and Magdalen College, Oxford. He joined the Foreign Office in 1894 and served at Buenos Aires, Teheran, Rome and Stockholm where he was chargé daffaires in 1913. He was posted to Athens with the rank of Counsellor of Embassy 191317 where he was British delegate to the international ficial commission which had been established following the 