The elder son of the 2nd Earl Granville, Leveson-Gower was educated at Eton College[1] and joined the Diplomatic Service in 1893 as an attaché in Berlin.
He served in Cairo, Vienna, The Hague and Brussels, then was appointed back to Berlin with the rank of Counsellor in 1911.
In 1913 he was appointed to Paris, again as counsellor, and moved to Bordeaux when the French government relocated there in September 1914 as the German army approached the capital before the First Battle of the Marne.
On 1 January 1917 he was appointed Diplomatic Agent to the Greek provisional government of Eleftherios Venizelos in Salonika,[2] shortly afterwards formalised as Minister Plenipotentiary.
[12] He was given the additional, senior knighthood of KCMG in the New Year Honours of 1924[13] and raised to GCMG in 1932.