The Venerable Horace Edward Samuel Sneade Lambart, 11th Earl of Cavan, TD (25 August 1878 – 9 December 1950), was an Anglo-Irish soldier and Anglican priest.

Lambart was born at Wheathampstead, Hertfordshire,[1] and was educated at Charterhouse School and graduated from Magdalen College, Oxford, as BA in 1901 and MA in 1904.

He renounced his commission to enlist, through the Inns of Court Rifles, into the London City Imperial Volunteers in 1900, after the outbreak of the Boer War.

[1] In South Africa, he served from 1900 to 1902 as Private in the CIV despatch cyclist section, much of the time under Lord Kitchener's personal orders.

He was mobilised at the outbreak of the First World War and accompanied the regiment to Egypt but left in December 1916 to take up his civilian post as Archdeacon of Salop.