Henry George Outram Bax was the only son of John Henry Bax, of
Houghton-le-Spring, who had married Sarah Elizabeth Hughes, and in 1866 took the surname Bax-Ironside by royal warrant, when his son became Henry Bax-Ironside. He was educated at
Eton College and
Exeter College, Oxford and joined the
Diplomatic Service in 1883. He served in Copenhagen, Teheran, Vienna, Cairo, and Washington, D.C., and was briefly in charge of the Central American Legation in 1897 before being appointed Secretary of the Legation at Pekin in the same year. Bax-Ironside was First Secretary of the Legation at
Stockholm from 1900 until late 1902, when he was appointed
Minister Resident and Consul-General at Carácas, serving as such until 1907. He arrived in Venezuela in the months leading up to the
Venezuelan crisis of 1902–1903, when the United Kingdom, Germany and Italy imposed a naval blockade against the country from December 1902 until February 1903. Shortly before the actual blockade, Bax-Ironside and other members of his legation were evacuated by a British warship. He was
Minister Plenipotentiary to Chile 1907–09,
Minister Plenipotentiary to Switzerland 1909–10, and
Minister Plenipotentiary to Bulgaria, 1911–15. While in Bulgaria he was "His Majesty's Special Envoy Extraordinary to attend the ceremonies to be held in commemoration of the coming of age of His Royal Highness Prince Boris,
Prince of Tarnovo, Heir to the Throne of Bulgaria" in 1912. Henry Bax-Ironside was appointed a Knight Commander of the
Order of St Michael and St George (KCMG) in the
1911 Coronation Honours. ==Family==