
John Thomond O'Brien
1786–1861
The Baltinglass-born aide-de-camp to San Martín, who tried to recruit Irish emigrants in the 1820s, was jailed by Rosas and now lies in Mendoza.
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Visiting
Visiting: Not confirmedas of 3 August 2026
No memorial site is confirmed; the living link is the Longford Westmeath Argentina Society's annual asado at The Rustic Inn, Abbeyshrule, last reported in August 2026.
Source: Westmeath Examiner, Argentine ambassador celebrates enduring links at annual asado, 3 Aug 2026, 3 August 2026(opens in a new tab)Most Irish emigrants to Argentina came from one district: most of Westmeath, south Longford and a small part of north Offaly. Patrick McKenna's thesis puts the district's share of permanent settlers at about 61 per cent, and Edmundo Murray, using Eduardo Coghlan's data, gives Westmeath alone 43 per cent and Longford 15 per cent. Murray lists Multyfarnham, Ballinacarrigy, Moyvore, Ballymore and Drumraney as the Westmeath home parishes. Ballinacarrigy was the second-largest emigration area until 1880. Kirby's 1992 study traced most 1860s emigrants to around Ballymore, a village remembered as having "two ends and no middle" because so many houses emptied.
The chain began at Streamstown. McKenna, citing Thomas Murray, names John Mooney and his son-in-law Patrick Bookey of Streamstown as the first recorded nineteenth-century emigrants, arriving in Buenos Aires in 1827; Nally gives 1828. They became the most important employers of Irish labour at their meat-salting works. John Thomond O'Brien met Mooney on his recruiting trip in the late 1820s, and Thomas Armstrong, from near Athlone, recruited from the Ballymahon, Ballymore and Mullingar district. McKenna explains the pattern as patronage plus land hunger at the edge of Leinster's good grassland; it is one historian's thesis.
Families sold up to go. On 28 March 1863 Nicholas Cunningham of Ballymore signed his share of the family farm over to his brother for his fare and some cash. Eamon Bulfin's mother, Ann O'Rourke, was from Ballymore.
The link lives on. The Longford Westmeath Argentina Society, founded in Mullingar around 1989, holds an annual asado at The Rustic Inn in Abbeyshrule on a Saturday near 20 July; about 130 people attended in 2026, with the Argentine ambassador.
Published sources give different versions. Here is each one with its source, and the wording we use.
When John Mooney of Streamstown reached Buenos Aires
1827, with his son-in-law Patrick Bookey
Source: Patrick McKenna, Nineteenth Century Irish Emigration to, and Settlement in, Argentina, MA thesis, Maynooth, 1994(opens in a new tab)1828
Source: Nally, Irish emigration to Argentina (irlandeses.org, 1992), 1992(opens in a new tab)We say: In the late 1820s
O'Brien's recruiting trip
1826–28
Source: Edmundo Murray, O'Brien, John Thomond, Dictionary of Irish Latin American Biography (1 June 2004, edited 7 May 2009), 7 May 2009(opens in a new tab)1827–28
Source: Nally, Irish emigration to Argentina (irlandeses.org, 1992), 1992(opens in a new tab)We say: In the late 1820s

1786–1861
The Baltinglass-born aide-de-camp to San Martín, who tried to recruit Irish emigrants in the 1820s, was jailed by Rosas and now lies in Mendoza.

1892–1968
Born in Argentina to William Bulfin, he raised a flag over the GPO in 1916, was deported to Buenos Aires and became the Irish Republic's first representative there in 1919.

early 1860s–1910
Offaly-born writer who went to the pampas as a young man, rose from contributor to owner-editor of The Southern Cross as 'Che Buono', and wrote Rambles in Eirinn (1907).

1797–1875
The Offaly-born merchant and banker who recruited the first Westmeath–Longford emigrants in 1826 and became Fr Fahy's banker and landlord.
The Westmeath Protestant whose camp journal is the earliest Irish voice from the sheep frontier, recording faction fights, drink and murder.
1803
The Streamstown man who, with his son-in-law Patrick Bookey, was the first named Westmeath settler-employer in Argentina in the late 1820s.
Sources