O'Raghallaigh History, Family Crest & Coats of Arms

The O'Raghallaigh surname originally appeared in Gaelic as O Raghailligh, which means descendant of Raghallach.

Early Origins of the O'Raghallaigh family

The surname O'Raghallaigh was first found in County Cavan. They were known as the Princes of East Breffny, descended from Raghallaigh, Prince of Breffny in 981. They maintained their territory during the Anglo/ Norman invasion of Strongbow, Earl of Pembroke, in 1172, but Sir John O'Reilly, Prince of Breffny surrendered the principality to Queen Elizabeth I thereby ensuring that his territories remained intact.

Important Dates for the O'Raghallaigh family

This web page shows only a small excerpt of our O'Raghallaigh research. Another 95 words (7 lines of text) covering the years 1598, 1669, 1630, 1695, 1689, 1640, 1703, 1689, 1646, 1691 and 1667 are included under the topic Early O'Raghallaigh History in all our PDF Extended History products and printed products wherever possible.

O'Raghallaigh Spelling Variations

Spelling variations of this family name include: O'Reilly, O'Reilley, O'Reily, O'Rielly, O'Riely, O'Riley, O'Rilley, Reel and many more.

Early Notables of the O'Raghallaigh family (pre 1700)

Notable amongst the family name at this time was Count John O'Reilly; Edmund O'Reilly (1598-1669), Roman Catholic Archbishop of Armagh; Hugh Reily (Reilly or O’Reilly) (c.1630-1695) Irish Member of Parliament for Cavan Borough in the Patriot Parliament of 1689; Philip Og O’Reilly (Gaelic was Phillip Óg O’Raghallaigh)(c.1640-1703), Irish...
Another 48 words (3 lines of text) are included under the topic Early O'Raghallaigh Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the O'Raghallaigh family

Some of the first settlers of this family name or some of its variants were: the families who settled in Newfoundland - in St. John's, Tilton Harbour, Placientia, Tickle Bay, Tilt Cove, and many more, between 1805 and 1871; James O'Reiley settled in New York in 1823.

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