The Irish Ancestry of Joe Biden

This piece of work was researched and written by expert genealogist, Ita O’ Boyle. 

The Irish Ancestry of Joe Biden

Joe Biden’s ancestry traces back to the famine years in Ireland when hunger, despair and destitution propelled many of the Irish population to cross the Atlantic in search of a better future.

Born on 20 November 1942, Joseph Robinette Biden Jr. was the first born of Joseph Robinette Biden Sr. and Catherine Eugenia (known as Jean) Finnegan, who married in 1941. The ancestry of Jean Finnegan is purely Irish, tracing back to the years of Ireland’s massive emigration at the time of the Great Famine. Jean was the daughter of Ambrose Joseph Finegan and Geraldine Catherine Blewitt, both children of Irish immigrants. His Biden ancestors contribute his great grandmother, Mary Hanafy.

Mayo 3 with borderThis research was undertaken by Ancestor Network, Ireland’s leading genealogy and family history research firm, genealogical advisor and publisher.  This research has focused on the Finegan Family, Carlingford, Co. Louth and the Blewitt family, Co. Mayo.

Joe Biden’s maternal grandfather, Ambrose Joseph Finnegan. He was born in Pennsylvania, the son of Owen Finnegan and Jane Boyle, who emigrated from Carlingford, Co. Louth in the late 1840s.

According to his death record, Ambrose Joseph Finnegan was born on 11 July 1885 in Olyphant, Lackawanna County, Pennsylvania, USA to James Finegan and Catherine Roche. To confuse matters Ambrose was living with his Uncle, Peter Roche, [Catherine’s brother] in the 1900 census. Unfortunately the 1890 census did not survive.

James Finnegan married Catherine Roche the US.  The marriage record has not been found. Catherine  (b. c. 1944) was the daughter of Thomas Roche, and Bridget. Whilst Catherine was born in the US, Thomas Roche (57, b.c.1813) was a stonemason and both he and his wife, Bridget (b.c.1817) were born in Ireland.

James Finnegan was born in Ireland to Owen Finnegan and Jane Boyle. He was baptised 18 December 1840 in the RC Parish of Lordship His parents were recorded as Owen Finnegan and Jane Bail (sic). All of his siblings were also baptised in this parish.

Baptism of James Finegan, 18 Dec 1840, RC Church Lordship, Co. Louth

Source: National Library of Ireland

Owen Finnegan and Jane Boyle were married 8 December 1839 in the neighbouring RC Parish of Carlingford South, Co. Louth.

Marriage of Owen Finnegan and Jane Boyle, 1839, Co. Louth

Source: National Library of Ireland

Unfortunately, no townland addresses are recorded in the local Parish baptism or marriage registers. However, the Finnegan family are believed to have originated in the townland of Whitestown.  It being traditional at the time for the firstborn son to be named after the paternal grandfather, it is noted that the first son of Owen and Jane was called James. In 1833, the Tithe Applotments , Whitestown, records James (as well as a John, Patt, and Bernard) Finnegan on the Brabazon Estate in Whitestown

Owen Finnegan was born c.1820 and no record of his baptism has been identified. The Carlingford Parish Registers record the baptism of Bid (Bridget) Finnegan on 24 November 1811 to James Finegan and Mary Murphy, Whitestown. It is possible that Bid Finnegan is a sibling of Owen Finnegan and that James Finnegan and Mary White are his parents.

Emigration of Owen Finegan, Manifest of S.S. Isaac Wright, February 1849


Twenty four year old Owen Finigan (sic.), a shoemaker, arrived in New York on 26 February 1849 aboard the S.S. Isaac Wright. (It has been incorrectly recorded elsewhere that Owen Finnegan travelled aboard the S.S. Brothers in 1849.) His wife, Jane Finigin (sic.) (née Boyle) migrated a year later on 15 May 1850 on the S.S. Marchioness of Bute accompanied by her children, James (7), Stephen (5) and Patrick (Infant).

The Federal Census of 1860 records Owen Finnegan, a shoemaker and Jane Finnegan in Ovid, New York with five children, the eldest being James (19, b.c.1841, recorded as being blind).

Owen Finnegan died on 15 June 1875 six months after the death of his wife, Jane Boyle on 23 December 1874.  They are buried in Holy Cross Cemetary, Ovid, Seneca County, New York.

Joe Biden’s maternal grandmother was Geraldine Catherine Blewitt,  husband of Ambrose Finnegan. Geraldine was the daughter of Edward Francis Blewitt and Mary Ellen Stanton.

Edward Blewitt was a member of the Pennsylvania State Senate and was born in New Orleans, Louisiana, to Irish parents from Co. Mayo, Patrick Blewitt and Catharine “Kate” Scanlon. Edward Blewitt recorded that he was born on 2 January 1859 in New Orleans, Louisiana when he travelled aboard the S.S.Voltaire from Halifax, Nova-Scotia to Philadelphia in July 1924.

The ‘Who’s Who in Pennysylvania’ recorded that Edward Blewitt married Mary Ellen Stanton in 1879 and had four children, Patrick Robert, Arthur, Mary Gertrude and Catharine Geraldine. Following the death of Mary Ellen (in 1887), he married Anne M. Blackwell in 1891. Edward had an illustrious career in Engineering and was a State Senator for the 22nd District of Pennsylvania. He was described as a ‘Democrat in politics and a Roman Catholic in his religious faith’.

The US Federal Census of 1870 recorded Edward Blewitt with his parents Patrick and Kate [née Scanlon] in Scranton, Pennsylvania. Patrick Blewitt (40, b.c.1830), a Civil Engineer and his wife, Kate (35, b.c.1835) were both born in Ireland and all children are recorded as being born in Pennsylvania. (Edward Blewitt records that he was born in Louisiana on subsequent Census returns). The maiden name of Kate Scanlon was recorded on the death registration record for Kate’s brother, William Blewitt, in 1918

Patrick [Pat] Blewitt (aged 18 years) family migrated to the United States with his family aboard the S.S. Excelsior in June 1851. He travelled with his parents Edward Blewitt, his wife, Mary Mulderrig  (both b.c.1802) and children (b.1831-1847) John (20), Maria (18), Michael (13), Thomas (11), Ed (10), Catherine (7) and Rob (4). Whilst his father, Edward, is recorded as a labourer, Pat is listed as a sailor and recorded his previous address as the United States. Based on this information, Patrick was born c. 1833.

Patrick died a widow, in Scranton, Pennsylvania, on 25 Nov 1911. His death record confirmed his parents as Edward Blewitt and Mary Mulderig.

Manifest of S.S. Excelsior, Blewett (sic.) Family, 28 June 1851


The Blewitt and Scanlon families are thought to have originated in the townland of Rappacastle ), North West of Ballina in Co. Mayo.  The Irish name for Rappacastle is Caisleán na Ropaí, ‘Castle of the Plundering’ . Rappacastle belongs to the Civil Parish of Ardagh. It is also likely that Mary Mulderrig also came from the same locality.

The Kilmoremoy Parish Registers record baptisms, marriages and deaths in the town of Ballina and its hinterland. The registers are incomplete and there are significant gaps, particularly in the early years. It is also likely that not all such events were recorded, even within the designated dates.

Whilst no marriage record was found for Edward Blewitt and Mary Mulderrig, baptismal records for their son, John (1827) and Mary (1929) placed the family in Ballina Town.

According to the ‘Mayo News’, the family left Ballina for the neighbouring Parish of Ardagh after the birth of Patrick. This move coincided with an outbreak of Cholera in the town of Ballina and this may have been a deciding factor in the move out of the town. Edward Blewitt, a Civil Engineer, was thought to have worked with the Ordnance Survey when it visited Mayo in the 1830s and had been a brickmaker earlier, supplying bricks for the construction of Killala Cathedral in 1827.

It has been speculated that the baptism of Patt Bluet, son of Edward Bluet and Mary Redington on 24 April 1832 in Kilmoremoy may be that of the ancestor of Joe Biden.

It has been speculated that the baptism of Patt Bluet in April 1832 in Kilmoremoy may be that of the ancestor of Joe Biden. The given maiden name of the mother is Redington. According to McLysaght this surname is “an English name much used as a synonym of Mulderrig”. This concurs with the  research that has identified a Mary Mulderig as the mother of Patrick Blewitt and is therefore possibly the correct record.

No Blewitts were recorded in Rappacastle townland in any of the C19th land records. Instead an Annesley Knox, the landlord of the estate was the only individual recorded in Rappacastle in Griffith’s Valuation in 1856.

No further genealogical information on Kate Scanlon or Mary Mulderrig.

Mary Ellen Stanton, who married Edward Blewitt in 1879, was the daughter of James Stanton and Mary Arthurs.

The US Census of 1880 records James Stanton (38, b.c.1842) and Mary née Arthurs (35, b.c.1845) in Scranton, Lackawanna, Pennsylvania with five children, Bridget (16), Mable (11), Edward (9), Elizabeth (3), and John (1). Also living with the family was Bridget Arthur, 60 year old mother of Mary Stanton. All children were born in Pennsylvania. Mary Ellen Stanton had married Edward Blewitt the year previous in 1859.

Both James Stanton and his wife, Mary Arthurs, were born in Ireland, as was Bridget Arthurs.

James Stanton was the great-great-grandfather of Joe Biden and father-in-law of Edward Blewitt.

Completed by Ancestor Network   

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