Baron O'Hagan, of Tullahogue in the County of Tyrone, is a title in the Peerage of the United Kingdom.^[1] It was created on 14 June 1870 for Sir Thomas O'Hagan, then Lord Chancellor of Ireland. His younger son, the third Baron, served as a Lord-in-waiting (government whip in the House of Lords) from 1907 to 1910 in the Liberal administrations of Sir Henry Campbell-Bannerman and H. H. Asquith and was later a Deputy Speaker of the House of Lords. In 1909 Lord O'Hagan assumed by Royal licence the additional surname of Towneley, which was that of his maternal grandfather. As of 2010^[update] the title is held by his grandson, the fourth Baron, who succeeded in 1961. He is the son of the Hon. Thomas Anthony Edward Towneley Strachey (d. 1955). Lord O'Hagan was a Member of the European Parliament for Devon from 1973 to 1975 and again from 1979 to 1994, first as an independent and later as a Conservative. He assumed in 1938 by deed poll the additional Christian name of Towneley and the surname of Strachey in lieu of his patronymic. Strachey was the surname of his maternal grandfather Edward Strachey, 1st Baron Strachie.^[2]

• Thomas O'Hagan, 1st Baron O'Hagan (1812–1885)
• Thomas Towneley O'Hagan, 2nd Baron O'Hagan (1878–1900)
• Maurice Herbert Towneley Towneley-O'Hagan, 3rd Baron O'Hagan (1882–1961)
• Charles Towneley Strachey, 4th Baron O'Hagan (b. 1945)

The heir presumptive is his younger brother Hon. Richard Towneley Strachey (b. 1950)
The heir presumptive's heir apparent is his son Columba Strachey (b. 1985)

Coat of arms of Baron O'Hagan

Crest 1st on a Roman fasces lying fesswise Proper a cubit arm vested Gules cuffed Ermine the hand holding a dagger erect both Proper (O’Hagan) 2nd on a perch Or a hawk close Proper beaked and belled Gold jessed Gules (Towneley). Escutcheon Quarterly 1st & 4th Ermine a bend Azure on a chief of the last a fleur-de-lys Or (O’Hagan) 2nd & 3rd Argent a fess Sable in chief three mullets of the second (Towneley). Supporters Two lions Or collared gemel Sable pendent therefrom an escutcheon Argent charged with a hand couped Gules. Motto Mihi Res Non Me Rebus.

^[3]

• Kidd, Charles, ed. (1903). Debrett's peerage, baronetage, knightage, and companionage. London: Dean and son. p. 682.

v t e Extant hereditary baronies in the Peerage of the United Kingdom
King George III	Ellenborough Manners
The Prince Regent	Churchill Harris
King George IV	Ravensworth Delamere Forester Rayleigh Gifford Feversham Seaford Plunket Heytesbury Skelmersdale Wynford
King William IV	Kilmarnock Poltimore Mostyn de Saumarez Denman Abinger Ashburton Hatherton Stratheden Lovat^*
Queen Victoria	Rossmore^• Carew^• de Mauley Wrottesley Sudeley Methuen Stanley of Alderley^• Leigh Monteagle of Brandon Campbell Vivian Congleton Eddisbury^• Londesborough de Freyne Raglan Belper Chesham Churston Leconfield Lyveden Brougham and Vaux Westbury Annaly Northbrook Hartismere^• Hylton Penrhyn O'Neill Napier of Magdala Dunning^* Acton Wolverton O'Hagan Sandhurst Ettrick^* Aberdare Moncreiff Coleridge Cottesloe Hampton Harlech Tollemache Gerard Sackville Norton Trevor Ampthill Derwent Hothfield Tennyson Strathspey Monk Bretton Northbourne Northington^• Rothschild Revelstoke Monkswell Ashbourne St Oswald Montagu of Beaulieu Elphinstone^* Hindlip Grimthorpe Kensington^• Hamilton of Dalzell St Levan Basing de Ramsey Addington Savile Ashcombe Crawshaw Amherst of Hackney Newton Dunleath Swansea Aldenham HolmPatrick Burton Glanusk Cranworth Avebury Killanin Strathcona and Mount Royal
King Edward VII	Kinross Shuttleworth Grenfell Redesdale Burnham Biddulph Ritchie of Dundee Hemphill Joicey Nunburnholme Swaythling Blyth Marchamley Gorell Fisher Kilbracken
King George V	Hardinge of Penshurst de Villiers Glenconner Aberconway Merthyr Rowallan Ashton of Hyde Ravensdale Hollenden Parmoor Cunliffe Wrenbury Faringdon Shaughnessy Rathcreedan Somerleyton Carnock Beaverbrook Gainford Forteviot Colwyn Gisborough Morris Cawley Terrington Glenarthur Phillimore Inverforth Sinha Cochrane of Cults Clwyd Russell of Liverpool Swinfen Meston Cullen of Ashbourne Trevethin Glendyne Manton Forres Vestey Borwick Maclay Bethell Hunsdon Darling Banbury of Southam Merrivale Bradbury Mereworth^• Greenway Hayter Cornwallis Daresbury Wraxall Remnant Moynihan Craigmyle Dulverton Luke Alvingham Baden-Powell Ponsonby of Shulbrede Dickinson Noel-Buxton Howard of Penrith Rochester Selsdon Moyne Davies Rankeillour Brocket Milne Rennell Mottistone Iliffe Palmer Rockley Elton Wakehurst Hesketh Tweedsmuir Wigram Riverdale May Kennet Strathcarron
King Edward VIII	Catto
King George VI	Windlesham Mancroft McGowan Denham Rea Cadman Kenilworth Pender Roborough Brassey of Apethorpe Stamp Bicester Milford Hankey Harmsworth Rotherwick Glentoran Tryon Croft Teviot Nathan Reith Kindersley Ironside Latham Wedgwood Geddes Bruntisfield Brabazon of Tara Keyes Hemingford Moran Killearn Dowding Gretton Westwood Hazlerigg Hacking Chetwode Sandford Altrincham Broadbridge Mountevans Lindsay of Birker Piercy Chorley Calverley Tedder Colgrain Darwen Lucas of Chilworth Shepherd Newall Oaksey Rugby Layton Simon of Wythenshawe Kershaw Trefgarne Crook Amwell Milverton Clydesmuir Burden Haden-Guest Silkin§ Hives Ogmore Morris of Kenwood Macpherson of Drumochter Kenswood Freyberg Milner of Leeds Kirkwood Wise
Queen Elizabeth II	Jeffreys Rathcavan Baillieu Grantchester Coleraine Harvey of Tasburgh Gridley Strathalmond Strathclyde Clitheroe McNair Colyton Astor of Hever Sinclair of Cleeve Bridges Norrie Birkett Harding of Petherton Poole Rootes Netherthorpe Crathorne Spens MacAndrew Nelson of Stafford Howick of Glendale Sanderson of Ayot Cobbold Robertson of Oakridge Marks of Broughton Fairhaven Leighton of St Mellons Brain Aldington Inchyra Silsoe Egremont Thomson of Fleet Martonmere Sherfield Inglewood Glendevon Grimston of Westbury Renwick St Helens Margadale
§: Disclaimed.  Italics: This title is held by a peer who holds another of higher precedence. ^* Also a Lord in the Peerage of Scotland  ^• Also a Baron in the Peerage of Ireland