O'Callaghan, Michael
O'Callaghan, Michael (1887–1962), trade unionist, revolutionary nationalist, and civil servant, was born 25 January 1887 in Henry Street, Tipperary town, son of Denis Callahan, draper, of farming stock from Ballyhone, Emly, Co. Tipperary, and Bridget Callahan (née Hayes), of…...
Ó Ceallaigh, Cormac
Ó Ceallaigh, Cormac (1912–96), nuclear physicist, was born 29 July 1912 in Dublin, the only son among two children of Séamus Ó (Ua) Ceallaigh (James O'Kelly), consultant obstetrician and assistant master at the Coombe Hospital, and his wife Maire Cecilia (‘Birdie’) (née Ferran),…...
O'Connell, Peter (Ó Conaill, Peadar)
O'Connell, Peter (Ó Conaill, Peadar) (1755–1826), schoolmaster and lexicographer, was born at Carne, Killimer, Co. Clare (a townland latterly designated as Carrowdotia, on the Shannon estuary 8 km east of Kilrush), one of four sons and two daughters of Tadhg Ó Conaill and Áine Ó Conaill…...
O'Connell, Thomas Joseph (‘T. J.’)
O'Connell, Thomas Joseph (‘T. J.’) (1882–1969), teacher, trade unionist, and politician, was born 28 November 1882 at Spotfield, Bekan, Co. Mayo, second son of Thomas Connell, farmer, and Maria Connell (née Biesty). Educated at Bekan national school, where from July 1895 he served…...
O'Conway, Matthias James
O'Conway, Matthias James (1766–1842), linguist and lexicographer, was born 3 February 1766 in Galway, son of Matthew O'Conway (who was according to one source a ‘merchant’ of that city) and his wife Elizabeth O'Hogan. We know of only one other sibling, an older brother, John. A native…...
O'Donnell, John Patrick
O'Donnell, John Patrick (1920–2004), chemical engineer, was born 3 August 1920 in Kilmallock, Co. Limerick, one of three children of John O'Donnell and his wife Kitty. His parents owned a newsagent's shop in the town. John was a pupil at Bruree national school (where…...
O'Donovan, James Laurence (‘Jim’, ‘Seamus’)
O'Donovan, James Laurence (‘Jim’, ‘Seamus’) (1896–1979), scientist and republican, was born 3 February 1896 in Castleview, Co. Roscommon, fifth among seven children (three daughters and four sons) of Daniel J. O'Donovan, excise officer, and Margaret O'Donovan (née Brennan), of Co. Cork…...
O'Donovan, (Peter) Joseph ('Joe')
O'Donovan, (Peter) Joseph ('Joe') (1946–2008), consulting engineer, was born 9 June 1946 in Molloy Terrace, Ballina, Co. Mayo, son of Peter Joseph O'Donovan, a school inspector originally from west Cork, and his wife Hannah (née Bourke), formerly a teacher; he had at least four…...
O'Flanagan, Theophilus
O'Flanagan, Theophilus (c.1762–1814), classical and Irish scholar, was born in the parish of Tulla, Co. Clare, son of Mathghamhain Ó Flannagáin, scribe and hedge-schoolmaster. He was baptised Tadhg but later on entering TCD…...
Ó hUallacháin, Colmán
Ó hUallacháin, Colmán (1922–79), educator, linguist, Irish-language activist and priest, was born Liam Holohan on 8 December 1922 in Dublin, eldest among four sons and two daughters of Garry Holohan (Gearóid Ó hUallacháin) (1894–1967), imprisoned republican soldier, and latterly an…...
O'Kelly, Matthias Joseph
O'Kelly, Matthias Joseph (1786–1868), naturalist and catholic activist, was the son of Joseph O’Kelly of Co. Kildare, and lived at 147 James St., Dublin, before moving to Rochestown House, Rochestown Avenue, Killiney, Co. Dublin, with his wife, children, and two sisters. He had a…...
O'Leary, Jeremiah
This is a co-subject for the entry on Ó Laoghaire, Colm. View the original entry....
O'Leary, Michael
O'Leary, Michael (1936–2006), government minister and district judge, was born 8 May 1936 in Cork, son of John O'Leary, psychiatric nurse and publican, and his wife Margaret (née McCarthy). He was educated at Presentation Brothers College, Cork, at…...
O'Leary, William J.
O'Leary, William J. (1869–1939), Jesuit priest and scientist, was born 19 March 1869 in Dublin, son of Dr William H. O'Leary (qv), MP for Drogheda 1874–80, surgeon, and professor of anatomy at the Royal College of Surgeons in…...
Ó Maolmhuaidh, Proinsias (Francis O'Molloy)
Ó Maolmhuaidh, Proinsias (Francis O'Molloy) (d. 1677), grammarian and theologian, was probably born in the very early seventeenth century, and most likely in the part of Co. Offaly known as Fircall, or O'Molloy's Country. It is stated that he was of noble birth, being related to…...
O'Meara, John
O'Meara, John (1915–2003), academic, was born 18 February 1915 at Eyrecourt, Co. Galway, the elder of two sons of Patrick O'Meara, a small businessman from Ilaunmore on Lough Derg, and Mary O'Meara (née Donelan). The very early death of his father, at the end of 1915, and the troubled…...
O'Meara, Robert Allen Quain
O'Meara, Robert Allen Quain (1903–74), professor of medicine and medical scientist, was born 1 December 1903 in Skibbereen, Co. Cork, younger son of Timothy Joseph O'Meara (fl. 1895–c.1938), doctor, and his wife (née Allen). He was educated at Clongowes Wood…...
O'Rahilly, Aodogán John Eoin O'Sullivan
O'Rahilly, Aodogán John Eoin O'Sullivan (1904–2000), republican and engineer, was born 22 September 1904, third son among four sons of…...
Ó Raifeartaigh, Lochlainn Séamus
Ó Raifeartaigh, Lochlainn Séamus (1933–2000), theoretical physicist, scholar, and senior professor at the Dublin Institute for Advanced Studies, was born 11 March 1933 in Clontarf, Dublin, second eldest among three sons and three daughters of…...
O'Reilly, Joseph Patrick
O'Reilly, Joseph Patrick (1829–1905), chemist, engineer, and mineralogist, was born 11 July 1829 in Monaghan, fifth son among thirteen children of Thomas O'Reilly, solicitor, and Cecilia O'Reilly (née Devin). The family moved to Dublin on his father's appointment as master of the…...
Ó Riain (O'Ryan), Henry
Ó Riain (O'Ryan), Henry (fl. 1633), Dominican priest and Latin poet, probably received his classical education at Munster and pursued his philosophical and theological studies at Rome or elsewhere in Italy. Resident at Rome in 1633, he was commissioned to compose a…...
O'Rourke, Horace Tennyson
O'Rourke, Horace Tennyson (1880–1963), architect and town planner, was born 21 March 1880 in the family home at 34 Richmond Place North, Dublin, son of Francis P. O'Rourke, an accountant from ‘a noted professional family’, and Martha O'Rourke (née Rafferty). Horace's name on his…...
O'Sullivan, Cornelius
O'Sullivan, Cornelius (1841–1907), brewer's chemist, was born 20 December 1841 at Bandon, Co. Cork, one of seven children (three boys and four girls) of James O'Sullivan, merchant, and his wife Elizabeth (née Morgan). He attended Denny Holland's private primary school in Bandon,…...
O'Sullivan, Martin
O'Sullivan, Martin (1891–1956), trade unionist and politician, was born in 1891 in Ennistymon, Co. Clare. Educated locally at the CBS, he joined the Midland & Great Western Railway Co. as a clerk and worked in Sligo and Cavan…...
Owens, Evelyn
Owens, Evelyn (1931–2010), trade unionist and women's rights advocate, was born on 22 January 1931 at 23 Vernon Gardens, Clontarf, Dublin, the fourth of six children of William Owens, a civil servant of Clontarf, originally from Co. Roscommon, and his wife Ellen (née Monaghan), from…...