Plunkett-Ernle-Erle-Drax is the quadruple-barrelled surname of the descendants of Admiral The Honourable Sir Reginald Aylmer Ranfurly Plunkett-Ernle-Erle-Drax (1880–1967), who was the younger son of the 17th Baron of Dunsany by his wife Ernle Elizabeth Louisa Maria Grosvenor Ernle-Erle-Drax, née Ernle Elizabeth Louisa Maria Grosvenor Burton (1855–1916).
Reginald VelJohnson | Reginald Heber | Reginald Punnett | Reginald Victor Jones | Reginald Rose | Reginald Robinson | Reginald Maudling | Reginald Farrer | Reginald Ernest Moreau | Reginald D. Hunter | Drax | The Fall and Rise of Reginald Perrin | George Reginald Starr | Reginald Manningham-Buller, 1st Viscount Dilhorne | Reginald Drax | Reginald De Koven | Reginald de Grey, 1st Baron Grey de Wilton | Reginald Bosanquet | Reginald | Sir Reginald Neville, 1st Baronet | Richard Drax | Reginald Warneford | Reginald Southey | Reginald Pecock | Reginald Marsh | Reginald Manningham-Buller | Reginald Kell | Reginald James Blewitt | Reginald Horace Blyth | Reginald Goodall |
Drax is the grandson of Adm The Hon Sir Reginald Drax, the younger son of the 17th Baron of Dunsany and he is also the grandson of Lt Gen The Lord Weeks and is now Conservative MP for South Dorset.