Although not closely related to them, the Grogan family of Westmeath, Dublin and Wicklow crossed paths with my own Dublin Courtenay family and with the Ryans of Ballymackeogh, Tipperary, who also intermarried with the Pennefathers of Newport, Tipperary, so I've done a little research into them, using Burke's genealogies available online on Google Books, Ancestry.com and the Irish Genealogy website.
The earliest known member of this family was John Geoghegan of Co. Antrim who settled in Co. Wexford, and whose son was John Grogan, (1653 - 1720) who married twice. By his first wife, Anne Reynolds of Wexford, he had a son, Cornelius Grogan, from whom the Grogans of Johnstone Castle, Co. Wexford, descended.
Cornelius Grogan (1687 - 1724) married Elizabeth White of Ballyellis, Co. Wexford, and, by her, had John Grogan (1717 - 1768) of Johnstone Castle who married his cousin Catherine Knox. John Grogan and Catherine Knox were the parents of George Grogan who was the mayor of Galway, William Grogan who died in 1785, Thomas Knox Grogan who died in 1798 during the rebellion, John Knox Grogan (born 1760) of Johnstown, Wexford, who married Elizabeth Geraldine Fitzgerald, the daughter of the late Stephen Fitzgerald of Ballythomas, Queen's County, in January 1803 (this from 'Saunders Newsletter', 5th January 1803), Overstreet Grogan (born 1762), Catherine Grogan who married Vesey Colclough of Tintern Abbey, Mary Grogan who married Ebenezer Radford Rowe and Anne Grogan who married James White.
The eldest son of John Grogan and Catherine Knox was Cornelius Grogan, at one time MP for Enniscorthy, who, caught up in the 1798 rebellion, was accused of treason, possibly erroneously, and was executed, aged about 70, on Wexford Bridge on 27th June 1798. He was buried in Rathaspeck graveyard adjoining his Johnstown estates; his property eventually passed to his nephew, John Grogan, and then to his grandnephew George Grogan Morgan who was alive in 1844.
A memorial plaque in St. Saviour's, Arklow, Co. Wicklow, commemorates these early members of the family, and their role in the Rebellion of 1798, although makes no mention of another of the eldest of the brothers, Cornelius Grogan:
'Sacred to the memory of Thomas Grogan Knox of Castletown, Co. Wexford Esq., who was killed at the head of his Corps with two others charging the rebels on 8th June 1798 under the command of the Honorable Major Gen'l Needham at the battle of Arklow....he fell in the defence of his King and County aged 41 years....having taken his degree in Trinity College, he purchased a Cornetcy in the 2nd Horse (now the 5th Dragoon Guards) and continued in it for 15 years. He raised the above Corps, the Castletown Yeoman Cavalry (64 members) the 31st October 1796,,,he was the second surviving son of the late John Grogan of Johnstown....who was for many years MP for the town of Enniscorthy. This...was erected by his brother, John Knox Grogan of Johnstown.'
To return to John Grogan, (1653 - 1720) who, following the death of his first wife Mary Reynolds, . married a second time, his next wife being Anne Smith. Daughters were Mary Grogan who married Andrew Knox of Rathmacnee, and Sarah Grogan who married William Morgan, the mayor of Waterford. The son of John Grogan and Anne Smith was Edward Grogan of Ballytrain.....
This Edward Grogan of Ballytrain, Wexford, had a son, also named Edward. The younger of the two Edwards settled in Raheny, Dublin, where he married Jane Grierson (28th February 1740/1 - November 22nd 1814), the daughter of George Grierson and Jane Blow, in St. Andrew's, Dublin, on 1st May 1762. He was a silk mercer.
Their children follow:
1) George Grogan who died in 1763; also Euphemia Grogan who died in 1764.
2) Janet Catherine Grogan, born 1766, married Sir Jonah Barrington in St. Werbergh's, Dublin, on 7th June 1789. See further detail below.
3) John Grogan of 10 Harcourt Street, Dublin, then of Tinakilly Lodge, Wicklow. (1770 - 1830). A barrister, he married Sarah Medlicott, the daughter of George Dowling Medlicott of Youngstown, Kildare, and of Sarah Meredyth. Sarah Meredyth was a direct descendant of Richard Meredyth who was appointed Bishop of Leighlin in 1589 and who had come to Ireland from Wales as chaplain to the Lord Deputy Sir John Perrott. Both the names 'Medlicott' and 'Meredyth' would be recur in later generations of the Grogan family as a middle name.
The Meredyth family has been extensively resesarched by Keith Winter and you can access his excellent website here:
John Grogan was buried in the family plot in Raheny.
John Grogan and Sarah Medlicott had:
a) Sir Edward Grogan, Baronet of Moyvore, Westmeath (5th November 1802 - 1891). Created a baronet on April 11th 1859, Sir Edward Grogan married Charlotte Katherine McMahon in the British Embassy in Paris on July 27th 1867, the ceremony being performed there by Edward's younger brother, Rev. Charles James Grogan, who was also heir-presumptive to Sir Edward. The bride, Charlotte Catherine, was the eldest daughter of the baronet, Sir Beresford B. McMahon. Sir Edward Grogan, a fiercesome loyalist opposed to Catholic emancipation, died at Ballyntyre House, Dundrum, Co. Dublin, in 1891. He left a son, Sir Edward Ian Beresford Grogan, who had been born on 29th November 1873 at Avoca, Wicklow, and who succeeded his father as baronet on 26th January 1891. There were also three daughters, Maria Katherine Nina, Sarah Madeleine and Aileen Edward Sybil Theresa. The son, Sir Edward Ian Beresford Grogan, married Eleanor Flora Bosworth; he died at Shropham Hall, Norwich, on 11th July 1927.
b) Rev. Charles James Grogan (1805 - 5th October 1887).
c) Rev. John Grogan (1816 - 28th December 1899). He married Elizabeth Bourne, the daughter of the solicitor, Peter Bourne of 20 York Street, in St. Peter's, Dublin, on 2nd October 1850. At the time of the wedding, Rev. John Grogan was living in Annamoe Glebe, Co. Wicklow. The witnesses were Edward Grogan, Charles Frizel of Castle Kevin (who was married to Elizabeth Bourne's sister, Jane) and George Gibb.
Elizabeth died at 21 Clyde Road on 24th July 1921. Rev. John Grogan and Elizabeth Bourne had John Edward Grogan (1852 - 1871); Lizzie Grogan (born in Annamoe on 20th April 1853 - 4th December 1938; she died at 21 Clyde Road); Edward Medlicott Grogan (1856 - 1871); Ellen Fanny Grogan who married Rev. Arthur Edward Butt and had two daughters, Irene and Olive Butt; Caroline Jane Grogan who married Arthur Gore Ryder and who was living in Sidmonton Terrace in Bray in 1901; Alice Grogan, born 1863; the doctor, Amelia Grogan (1864 - 1930) - Amelia worked in the Mullingar Asylum and died in 1930 at 7 Anson Road, Tufnell Park, Middlesex; George Meredith Grogan (1867 - 4th July 1942), a military man who married Eva Augusta Elizabeth Ellis, and who lived at Plattenstown, Arklow, Co. Wicklow. In 1931, George and Eva had a son, Hume Grogan, later Major Hume Grogan of the Irish Guards.
d) Sarah Grogan (1804 - 1870); she married Anthony John Dopping of Lowtown House, Westmeath, in St. Peter's, Dublin, on 10th November 1823. The witnesses were W. J. Moore and Sir Henry Mar. The Dopping-Hepenstall papers, published online, show two assignments of mortgages on properties in Westmeath, which involved the following parties - Thomas Williams of Dublin, possibly 50 Lower Sackville Street, whose children married into the Killucan DeCourcey family, Anthony John Dopping of Galtrim, Westmeath, Joseph Henry Moore of Bachelors Walk, this dated 5th May 1825. The second mortgage document involved Jospeh Henry Moore of Bachelors Walk, Anthony John Dopping, and Edward Grogan of Harcourt Street, this dated 28th June 1828.
e) Jane Grogan who married William Ryan of Ballymackeogh.
f) Isabel Grogan (1811 - 1869). She died unmarried.
g) Suannnah Grogan (1812 - 1871) who married Vincent Scully of Mantle Hill, Tipperary, in 1841. Both were buried at the Rock of Cashel. An MP and barrister, Vincent Scully had been born in 1810 to Denys Scully and Catherine Eyre at Mantle Hill, Cashel.
h) Rev. George William Grogan (1819 - 1926). He married Helen Isabel Hall Graham in 1856.
4) Colonel George Grogan (1773 - 1846). He married, first, Dorinda Smith, then Catherine Benson.
5) Laurence Grogan, born 1775. He was a captain with the 83rd Regiment and died childless.
6) Rev. William Grogan (1778 - 1854). He lived at Slaney Park, Baltinglass, Wicklow, and was buried at Raheny. His son, Edwin Grogan, married Isabella Courtenay in 1861; his daughter, Elizabeth Jane Grogan, married William Courtenay, the brother of Isabella Courtenay.
7) Jane Grogan (1780 - 1818) married Henry Blaquiere of Dublin.
8) James Grogan died in infancy.
Notes on Sir Jonah Barrington and Catherine Grogan, the daughter of Edward Grogan and Jane Grierson:
Jonah Barrington had been born in Knapton House, Abbeyleix, Queen's County in 1757 to John Richard Barrington and Sibella French. He studied at Trinity College, Dublin, was called to the Irish bar in 1788, and became MP for various constituencies. He became involved in intricate political manoeuvres and was gradually overwhelmed by debts, resulting in his disgrace and dismissal in 1830. After settling in France in 1815, he wrote 'The Rise and Fall of the Irish Nation' and 'Personal Sketches of his own Time'. He died in Paris on 8th April 1834.
Their children were:
a) Edward George Barrington (1795 - January 1844). A captain in the 5th Dragoons, he died in Jersey in 1844. He married in Tuam Cathedral, Galway, Anna Blake, the third daughter of a Netterville-Blake of Berming House, Co. Galway, and grand-niece to Viscount Netterville. Edward and Anna had a daughter, Catherine Sybella Barrington, who married Lewis Gabriel Sharkey, the son of Patrick Sharkey, on 8th September 1845 in St. George's, Dublin. The bride's address was Richmond Place, and the witnesses were James Netterville-Blake and John Lynch. This couple had a daughter, Sarah Jane Sharkey, in Great Brunswick Street on 27th July 1846. Catherine Sibella Barrington married, secondly on 12 April 1852, William Alexander MacKenna.
b) Jane Catherine Barrington (died 1872). In 1815, she married Thomas Grenier de Fonblanque, the Consul for Serbia. Their daughter, Jane Catherine Patricia de Grenier Fonblanque married, as his second wife, Kingsmill Pennefather of Knockinglass, Tipperary, in 1843. Kingsmill was the second son of Rev. John Pennefather of Newport, Tipperary, whose oldest son, Edward Pennefather, was our immediate maternal ancestor. The children of Thomas Grenier de Fonblanque and Jane Catherine Barrington were Jane Catherine Patricia de Fonblanque, died 6 May 1886, who married 4 October 1842 at St. Helier Parish, Jersey Bailiwick, Channel Islands, the Duchy of Normandy, Kingsmill Pennefather; Adelaide Arabella de Fonblanque, born in 1827, died 1 August 1856 at Basedow, the Grand Duchy of Mecklenburg-Schwerin, who married 1 November 1849, Otto Karl von Schlippenbach und Skofde (Count of Schlippenbach and Skofde) (Chamberlain to His Imperial Majesty Wilhelm I., Kaiser of Germany and King of Prussia, etc.); Caroline de Fonblanque, who married 19 September 1861 at St. Gabriel's Anglican Church, Warwick Square, St. Gabriel's Parish, Pimlico, Westminster City, Middlesex County, England, Richard Croker.
c) Sibella Phoebe Barrington (1797 - 1841) who married, in 1815, Captain William Loftus Otway of Nenagh (1792 - 1859); their son, William Loftus Otway, was born on October 23rd 1819 in Hounslow. A second son, James Barrington Otway, was baptised in St. Matthew's, Irishtown, Dublin, on 4th October 1829, followed by Francis Thomas Otway on 24th April 1831, Sybilla Phoebe Otway on 22nd December 1833. On 16th October 1860, a daughter, Arabella Joanna Otway of 97 Stephen's Green, married the barrister, John Norwood of 11 Nelson Street. Sibella Phoebe Barrington and Captain William Loftus Otway settled in Sandymount, Dublin, where some of their children died - William Otway, aged 4, died in January 1830; Sybella Phoebe Otway, aged 5 months, died in January 1834; William Loftus Otway, aged 21, died in July 1838; Sybella Otway herself died, aged 44, in January 1841. They were all buried in St. Matthews.
d) Patricia Barrington, who died in Naples on 23rd November 1843, and who married, in 1822, John Alexander Hunter (1828 - 1886). They had a son, also John Alexander Hunter (1828 - 1886). Patricia Barrington Hunter died young at some stage, and, in 1851, the widowed John Alexander Hunter, an ensign in the army, was living in Ham Commons, England, with two daughters, Henrietta Hunter, born circa 1828, and Mary Catherine, born circa 1831.
e) Arabella Henrietta Barrington (1807 - 1884) who was the co-heir of her father, along with her younger sister, Margaret Barrington. Arabella married, firstly in Dublin in 1828, Edward Hughes Lee. She married, secondly, in the Anglican Church, Geneva, on 13th September 1837, Captain Vincent Frederick Kennett, who worked for the East India Company. They had Patricia Barrington Kennett, born 1841 in Geneva, Isabella Barrington Kennett, born 1844 in Naples, and Vincent Barrington Kennett, born 1845. In 1851 they were living in Ormsby Lodge, Ham Commons, where Arabella's brother-in-law, John Alexander Hunter also lived; in 1861, the census captured them in Hove, Sussex. The couple's son, Sir Vincent Hunter Barrington Kennett (1844 - 1903) took the name of Barrington, and was granted the right to bear Barrington arms, as requested by his grandfather, Sir Jonah Barrington. Sir Vincent Hunter Barrington-Kennett married Alicia Georgette Sandemann in 1878.
f) Margaret Barrington, who married Captain John Worthy of the East India Company on 16th June 1829 in the Chapel of the British Embassy in Paris. They had Margaret Cassandra Worthy, born 1835 or 1836 in the British East Indies, who married in or about 1862 or 1863, William H. Woodman; Arabella C. H. Worthy, born in or about 1837 or 1838 in the British East Indies; Frederick Worthy, born in or about 1839 or 1840 at Chertsey Parish, Surrey County, England; Elizabeth P. Worthy, born in or about 1843 or 1844 at Surrey County, England.