Montgomery, Hugh Maude de Fellenberg (1870–1954), British Army general and politician, was born 5 December 1870, eldest son of the Rt. Hon. Hugh de Fellenberg Montgomery, PC and DL for Co. Tyrone, of Blessingbourne, Fivemiletown, Co. Tyrone, and his wife Mary Sophia, youngest daughter of the Hon. Rev. John Charles Maude, rector of Enniskillen. Montgomery's family were descended from Hugh Montgomery (qv), a Scottish planter who settled in Co. Fermanagh c.1618. He was educated at Eton, before attending the Royal Military Academy at Woolwich, and was commissioned as a second lieutenant in the Royal Regiment of Artillery in 1891. He saw active service with a field battery during the second Boer war, was mentioned in dispatches, and was awarded the Queen's Medal with three clasps. On his return from South Africa he served as an instructor at the staff college, Camberley, before taking appointments at the war office and on the staff of Eastern Command.
At the outbreak of World War I, he initially served as the assistant embarkation commandant at Southampton before travelling to France to work on the staff of 7th Division. He held this appointment until November 1914 and then transferred to 8th Division where he served as assistant adjutant and quartermaster-general. In March 1915 he joined the general staff in France, and in August was promoted to brigadier-general and appointed to the staff of 11th Army. Appointed as assistant quartermaster-general of V Corps (October 1915), he remained with the corps staff until the end of the war, was promoted to major-general, and was responsible for reorganising V Corps' supply system. Mentioned in dispatches eight times, he was created CB (1918) and CMG (1919). He was also awarded the Russian Order of St Anne (3rd class), the Légion d'honneur, and the Croix de Guerre. After the armistice of November 1918, he remained in Germany with the occupying forces and served on the staff of the Rhine Army. He later held a staff appointment with Southern Command and retired from the army in 1925.
After the death of his father he returned to Ireland to manage the family estate at Blessingbourne, and later served as a JP and DL for Co. Tyrone. He was also a member of the Fivemiletown board of guardians, the Clogher rural council, and the regional educational committee, and was associated with the South Tyrone unionist association. In 1938 he founded, with James Edward Caulfeild (qv), 8th Viscount Charlemont, the Irish Association for Cultural, Economic and Social Relations (usually referred to as the Irish Association). Deeply conscious of the tensions between the two communities in Northern Ireland, he remained committed to this non-political and non-sectarian association for the rest of his life and endeavoured to promote better relations between all Irish people. He died at Blessingbourne, 22 January 1954. His funeral at the parish church at Fivemiletown was attended by a large crowd which included the prime minister of Northern Ireland, Sir Basil Brooke (qv), later Lord Brookeborough.
He married (1894) Mary Massingberd Langton (d. 1950), second daughter of Edmund Langton of Gunby, Lincoln. They had three sons and three daughters. There are some letters of Montgomery in the PRONI, Belfast.