O'Lonergen History, Family Crest & Coats of Arms
The many Irish surnames in use today have long rich histories behind them. The name O'Lonergen originally appeared in Gaelic as O Longargain.
Early Origins of the O'Lonergen family
The surname O'Lonergen was first found in County Tipperary (Irish: Thiobraid Árann), established in the 13th century in South-central Ireland, in the province of Munster, where they held a family seat from ancient times.
One of the first records of the family was "at the synod of Kells, 1152, [when] Cardinal Paparo gave a pallium to Donat O'Lonergan of Cashel, and since then his successors have ruled the ecclesiastical province of Munster. " 
Early History of the O'Lonergen family
This web page shows only a small excerpt of our O'Lonergen research. Another 64 words (5 lines of text) covering the years 117 and 1172 are included under the topic Early O'Lonergen History in all our PDF Extended History products and printed products wherever possible.
O'Lonergen Spelling Variations
The general population of Ireland, like those of Europe and Britain during the Middle Ages, scribes recorded people's names as they saw fit. As a result, surnames often had many spelling variations. For O'Lonergen some of these variations included: Lonergan, Landergan, Landrigan, Ladrigan, Lonagan, Landragan, Longargan and many more.
Early Notables of the O'Lonergen family (pre 1700)
More information is included under the topic Early O'Lonergen Notables in all our PDF Extended History products and printed products wherever possible.
Migration of the O'Lonergen family
The 18th and 19th centuries saw many Irish families immigrate to North America in search of land and opportunities. The largest influx of Irish immigrants to the United States and British North America came during the 1840s when the Great Potato Famine laid waste to their homeland. Hundreds of thousands left the island in an attempt to escape the starvation and disease it brought. Although the arrival of such a large number of destitute Irish was not welcomed by the established population in the United States and what would become known as Canada at the time, these Irish were an essential element to the rapid development of these growing industrial nations. They filled the demand for the cheap labor needed for the work in factories and in the construction of bridges, roads, canals, and railways. An examination of passenger and immigration lists has revealed many immigrants bearing the name of O'Lonergen or one of its variants: Edward Landragan settled in Philadelphia in 1858 along with John; Thomas and Andrew Landragaon arrived in Philadelphia in 1876; Edmund and Michael Lonergan arrived in Philadelphia in 1856..