Geoffrey Twisleton-Wykeham-Fiennes, 18th Baron Saye and Sele

Early life and education Saye and Sele was born in Kensington, the eldest son of John Twisleton-Wykeham-Fiennes, 17th Baron Saye and Sele, and his wife, Lady Augusta Sophia Hay, daughter of Thomas Hay-Drummond, 11th Earl of Kinnoull. Sir Eustace Twisleton-Wykeham-Fiennes, 1st Baronet, was his younger brother. He was educated at Eton College.

Military career Twisleton-Wykeham-Fiennes was gazetted into the 108th Foot of the Oxfordshire Militia on 22 January 1879, the date of the Battle of Isandlwana. His father, who was anxious for his eldest son to see active service in the Anglo-Zulu War, had him transferred to the 2nd Battalion of the Royal Scots Fusiliers, and he was sent to South Africa to "avenge" the massacre at Isandlwana. based in Ayr. He was appointed an Honorary Colonel of the Battalion in 1907. During the First World War, he served as an Area Commandant in Flanders. He was also a Lieutenant-Colonel in the 3rd Battalion of the Middlesex County Regiment. to 1915 he served under H. H. Asquith as Comptroller of the Household. He was an active member of the Home Counties Liberal Federation, and was chairman of the National Land and Home League. He was also on the Standing Joint Committee of the Oxfordshire County Council, and in 1930 he became High Steward of the City of Oxford. Hon. Cicely Marion Violet Joan Twisleton-Wykeham-Fiennes (22 November 1900 – 14 August 1985), married John William Dunne, son of Gen. Sir John Hart Dunne

He died at the family seat of Broughton Castle in Oxfordshire in February 1937, aged 78, and was succeeded in the barony by his eldest son, Geoffrey. Lady Saye and Sele died 27 July 1946, aged 82.