'OConor3'Index links to: Lead / Letter
Families covered: O'Connor of Ballintubber, O'Conor of Castleruby, O'Connor of Gortnamona, O'Connor of Mount Pleasant, O'Conor (O'Connor) of Sylan, O'Conor of Tobermackey Castle, O'Connor of Tuomona

Felim Finn O'Conor ('Geannach')
1. Rory O'Conor
  A. Owen O'Conor
  i.+ issue - Connall, Dubalthagh
2. Felim Oge O'Conor
  A. Teige O'Conor
  i. Turlogh Callagh O'Conor
  B. Rory O'Conor of Tobermackey Castle, co Roscommon
  i. Teige O'Conor of Tobermackey Castle then Cashelrone or Castleruby, co Roscommon (d 1607)
  m. (1590) Mary ny Byrne
  a. Hugh Mergagh O'Conor of Castleruby (b 1592, d 1673)
  (1) Thady or Terence O'Conor of Knockleg then Tuomona, co Roscommon (d 05.1720)
  m. Dorothy
  (A) Terence O'Conor or O'Connor of Tuomona (d 1727-8)
  (i) Roger O'Connor of Tuomona (d 08.1727)
  m. (before 1704) Anne Crofton (d 1728, dau of William Crofton, son of John of Lisdoorne)
(a) Michael O'Connor of Tuomona (a 1772)
  m. Bridget Farrell (d 12.1768, sister of Bryan Farrell of Ardanra)
  ((1)) John O'Connor of Tuomona (d 06.1777)
  m. (1772) Winifred Dowell (dau of Simon Dowell of Gort, widow of Ignatius Kelly of Killaghamore)
  ((A)) Peter O'Connor of Tuomona (dsp 14.08.1839)
  (ii) Dominick O'Connor of Ballintubber, co Roscommon
(a) Hugh O'Connor of Ballintubber then London (b 1730, bur 14.12.1801)
  m. (21/2.12.1765) Monica O'Conor (d before 27.10.1812, dau of Hugh O'Conor of Galway & Douglas (Isle of Man), son of Bryan son of Dermot O'Connor of Sylanmore) @@ below
  ((1)) Hugh O'Connor (bpt 09.08.1771, d 23.10.1839) had issue (2 daus)
  m. (15.02.1821) Winifred Mostyn (d 18.03.1852, dau of Charles Browne Mostyn of Kidlington Hall)
  ((2)) Valentine O'Connor (b 24.10.1773, d 26.12.1829)
  m. (26.12.1796) Mary Henchy (d 08.05.1820, dau of David Henchy of Rockfield)
  ((A)) Hugh O'Connor (b 03.06.1801, d 01.02.1836) had issue
  m. (20.06.1828) Elizabeth Cashin (dau of Edmund Cashin of Waterford)
  ((B)) David O'Connor, later O'Connor-Henchy of Stonebrook, Sheriff of co Kildare (b 23.05.1810, d 01.12.1876) had issue
  m. (10.01.1850) Elizabeth Burke (d 31.12.1890, dau of Sir John Burke, Bart, of Marble Hill)
  ((C)) Valentine O'Brien O'Connor of Rockfield (co Dublin) & Ballykisteen (co Tipperary), Sheriff of Dublin (b 03.05.1811, d 13.09.1873) had issue
  m. (04.06.1838) Monica Errington (dau of William Errington of High Warden)
  ((D)) Ellen O'Connor (b 27.05.1799, d 06.1860)
  m. (27.01.1824) Percy Magan
  ((E)) Mary O'Connor (b 23.11.1802, d 04.03.1865)
  m. (20.02.1837) Baron de Curnieu
  ((F)) Monica O'Connor (b 03.11.1803, d 18.03.1879)
  m. (21.07.1825) Peter Purcell of Halverstown
  ((G)) Honoria O'Connor (b 03.11.1807, d 19.06.1866)
  m. (04.09.1832) Peter Slingsby FitzGerald (Captain)
  ((H))+ other issue - Margaret (b 10.04.1798, d 27.09.1831), Julia (b 04.08.1806, d 09.05.1821)
  ((3)) Malachy Thomas O'Connor of Guadaloupe (bpt 15.04.1779, d 29.06.1833, 4th son) had issue (2 daus)
  m. (11.09.1822) Marie Francoise de Bretteville (dau of Jacques Briere de Bretteville of Martinique)
  ((4)) Honora O'Connor (bpt 16.07.1768, d before 26.02.1846)
  m. (16.11.1797) John Shee of Balleredin
((5)) Eleanor O'Connor (bpt 01.01.1770)
  m. (02.06.1797) William Errington of High Warden
  ((6)) Christina O'Connor (b 1772)
  m. (10.1800) James Power (Captain)
  ((7)) Mary O'Connor (b 1774, d 03.11.1835)
  m. (11.01.1801) Anthony O'Brien (son of Dennis Thomas)
  ((8))+ other issue - Dominick (bpt 11.05.1775, d 17.12.1780), Juliet (bpt 26.10.1776), Monica (bpt 15.05.1782, d 23.05.1855)
  (iii) Roger O'Connor
  (2) Dorothy O'Conor
  m. Dermot O'Conor of Russine
  (3) Mary O'Conor
  m. Bryan Roe O'Connor of Corrasduna (son of Sir High O'Conor Don)



We do not know how the following John was connected to the other O'Conor/O'Connor families. His line is shown here for our convenience.
John O'Connor of Cappaghgarane or Gortnamona, King's Co. (d Aughrim 07.1691/2?, Colonel, MP)
1. Maurice O'Connor of Gortnamona, part renamed Mount Pleasant
m. (c1725) Mary (Plunkett) (d 1759, dau of Peter, 4th Earl of Fingall)
  A. John O'Connor of Mount Pleasant, Sheriff of King's Co. (d c1765)
  m. (21.09.1752) Mary Malone (dau of Richard Malone)
  i. Maurice Nugent O'Connor of Mount Pleasant, Sheriff of King's Co. (d 1818)
  m. (03.05.1794) Maria Burke (dau of Sir Thomas Burke of Marblehill, Bart)
  a. Catherine O'Connor (d 13.02.1874)
  m1. (17.10.1817) John Otway (Cuffe), 2nd Earl of Desart (d 22.11.1820)
  m2. (01.1824) Rose Lambart Price (son/heir of Sir Rose, Bart)
  b. Mary O'Connor
  m. (1826) Hugh Morgan Tuite of Sonna
  c. Elizabeth O'Connor
  m. Rev. B. Morris 'of Mount Pleasant' (rector of Rincurran)
Mount Pleasant, which was later renamed Gortnamona, passed to their son who assumed the name O'Connor-Morris.
  d.+ other issue - John (dsp 1814), Julia (d unm 11.1850)
  ii. John O'Connor of Ballycumber (3rd son)
  m. Cathrine D'Alton (widow of _ Netterville)
  a. Henry O'Connor (2nd son?) had issue
  m. (1844) Elizabeth Robinson (dau of John Robinson, niece of Admiral Hercules Robinson of Rosmead, m2. George Armstrong, m3. John Smith)
  b.+ other issue including John (d unm)
  iii. Henry O'Connor
  m. (1816) Alicia Malone (dau of Henry Malone of Pallas)
  iv. Mary O'Connor
  m. (1774) Edmond Malone of Ballynahown
  v. Frances O'Connor
  m. Philip Stepney
  vi. Anne O'Connor who married ...
  m. Edmond Malone of Cartrons
  vii.+ other issue - Richard, Jane
2.+ other issue - Gerald, Thomas (dsp)



The following family is a "branch of the O'Connors Sligo".
Malachy or Loughlin O'Connor of Tuam, later of Kilcluney & Sylan (a 1641, d 07.1680)
m. Mabel Atrea O'Rourke of Brefni
1. Dermot O'Connor or O'Conor of Sylan (d 1691, Captain)
  m. Alice Lynch (dau of Isidore Lynch of Drimcong)
  A. Laughlin O'Conor of Sylan (d 11.1703)
  B. Hugh O'Conor (d 1736, 4th son)
m1. (1709) Jane Browne (dau of Valentine Browne of Galway)
  i. Dermot O'Conor of Sylan (b 1710, d 12.12.1793)
  m. (before 1746) Mabel O'Flynn (d 03.10.1757, dau of Edmund O'Flynn of Turlough)
  a. Edmund O'Conor (dsp 1787, Captain)
  b. Thomas O'Conor, Bishop of Achonry, Archbishop of Tuam (d 18.02.1803)
  c. Mary O'Conor
  m. John Melville
  d. Mabel O'Conor
  m. (02.07.1771) Thomas Donelan of Peterswell
  m2. (1718) Agnes Browne (d 03.4-17763, widow of James Tully of Girrah)
ii. Andrew O'Conor
  C. Bryan O'Conor (youngest son)
  m. _ Browne (dau of Michael Browne of Tuam)
  i. Hugh O'Conor of Galway then of Douglas, Isle of Man (bur 10.05.1783)
  m. (02.1742) Honoria Browne (d 12.1771, dau of Valentine Browne of Galway)
  a. Valentine O'Conor of Oakley Park, Blackrock, co Dublin (b 1744, d 19.01.1814)
m. (10.06.1775) Mary Moore (d 03.05.1783, dau of Edmund Moore of Mount Browne)
  (1) Mary O'Conor
  m. (04.08.1803) Maurice Blake of Towerhill
  (2)+ other issue - Hugh (bpt 30.07.1781, dsp 03.1815), Honora (bpt 04.11.1779)
  b. Malachy O'Conor (b 1753, d 02.01.1831)
  m. (27.10.1803) Lydia Brodie (b 14.03.1775, d 20.02.1863, dau of Alexander Brodie of Windyhills, widow of Bryan Blake)
  (1) Honoria O'Conor (b 26.08.1804, d 09.11.1859)
  m. (27.07.1831) John Sweetman of Drumbaragh
  c. Monica O'Conor (d 1814)
  m. (21/2.12.1765) Hugh O'Connor of London & Dublin @@ above
  d. Mary O'Conor (d before 24.12.1807)
  m. (05.12.1772) Christopher Sherlock (d 29.10.1785)
  e. Julia O'Conor
  ii. Celia O'Conor
  m. Henry Blake
  iii.+ other issue - Arabella, Margaret
  D. Gyles (Gilles) O'Conor
  m. (1650) Andrew Merrick of Kilbenane (son of William of Tully)
  E.+ other issue - Matthias (d by 1701), Turlough (d by 1701), Michael (d before 1700), Mark )a 1700)

Main source(s):
(1) For upper section (uploaded 25.03.13) : BLGI1912 (O'Connor-Henchy of Stonebrook)
(2) For middle section (uploaded 25.03.13) : BLGI1912 (O'Connor-Morris of Gortnamona or Mount Pleasant)
(3) For lower section (uploaded 31.03.13) : the section on 'O'Connor of Sylan' within BLGI1912 (Donelan of Sylanmore)
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