Samuel Beckett | Hercules | Sir | Samuel Taylor Coleridge | Sir Walter Scott | Samuel Johnson | baronet | Samuel Pepys | Baronet | Samuel L. Jackson | Rutherford B. Hayes | Isaac Hayes | Hercules: The Legendary Journeys | Sir Arthur Conan Doyle | Helen Hayes | Samuel R. Delany | Samuel Barber | Hayes | 4th United States Congress | Sir Robert Peel | Samuel Goldwyn | Samuel | 4th | Samuel Alito | Samuel Butler | Sir Arthur Harris, 1st Baronet | Samuel Ramey | Woody Hayes | Sir Raylton Dixon | Sir Harold Hillier Gardens |
His father, William Harcourt Isham Mackworth (1806—1872), a younger son of Sir Digby Mackworth, the 3rd Baronet, took the additional surname Dolben after he married Frances, the heiress of Sir John English Dolben, the 4th Baronet.
He was educated at Harrow, and succeeded his father Sir Edmund Samuel Hayes, 3rd Baronet as baronet in 1860 and inherited the family estate of Drumboe Castle in County Donegal.
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Hayes was born in 1840 the son of Sir Edmund Samuel Hayes, 3rd Baronet and his wife Emily Pakenham, daughter of Lieutenant-General the Honourable Sir Hercules Pakenham, a son of the Earl of Longford.