O'Carroll
also Carroll, Ó Cearbhaill
Ely O'Carroll, kings of north Tipperary into the Tudor age.
- Origin
- Leinster, Ireland
- Motto
- In fide et in bello fortis
- Famous bearer
- Charles Carroll of Carrollton (1737–1832), signer of the American Declaration of Independence
- Register
- Irish family
CoreHistoric reach
The seat of O'Carroll
Seat vacantChief
No one leads the O'Carroll community yet. When the movement opens, you can stand for its leadership, or help elect whoever does.
Current mission
No shared goal set yet. Once O'Carroll has leadership, it sets the public focus: a restoration, a gathering, a real-world project that helps its own.
The O'Carroll clan is being rebuilt. Join the waiting list for the movement today, and you help decide who leads it and what it does.
Help rebuild the O'Carroll clan →Motto
In fide et in bello fortis
“Strong in faith and in war”
What does the O'Carroll name mean?
From Ó Cearbhaill, descendant of Cearbhall ('hacking warrior'). Several distinct families took the surname independently in different parts of Ireland; the most powerful were the Ó Cearbhaill of Éile (Ely O'Carroll), the Munster sept who ruled a kingdom of north Tipperary and southern Offaly from the 8th century to the late 16th. Two further unrelated Carroll lines were the Ulster Ó Cearbhaill of Oriel (modern Louth and Monaghan) and a smaller Leinster line in Ossory.
The history of O'Carroll
Ely O'Carroll was one of the longest-surviving Gaelic kingdoms, a near-independent lordship straddling the modern Tipperary-Offaly border, with its principal stronghold at Birr and the broader territory anchored on the Slieve Bloom mountains. The Ó Cearbhaill held the kingdom under successive nominal Anglo-Norman overlords through the medieval period and were among the last Gaelic kindreds to submit by surrender-and-regrant under Henry VIII, Maolruanaidh O'Carroll formally surrendering Ely in 1552. The Cromwellian and Williamite confiscations broke the lordship in the 17th century but the surname remained densely planted across the original Ely territory.
Charles Carroll of Carrollton (1737–1832), the only Catholic signer of the American Declaration of Independence, and the last surviving signer at his death, descended directly from the Ely O'Carroll line via his great-grandfather Charles Carroll 'the Settler', who emigrated to Maryland in 1688. His cousin Daniel Carroll (1730–1796) signed the United States Constitution; Daniel's brother John Carroll (1735–1815) was the first Roman Catholic bishop of the United States and the founder of Georgetown University. The Carrolls of Maryland are unique in American history as the only Catholic family to produce signers of both founding documents.
Champions of the O'Carroll name
The bearers whose lives are inseparable from this surname. Each has its own page — biography, achievements, geography, connection to the family.
Step Into History
Walk the streets and seats the O'Carroll name knew — a photoreal walk through time, on foot.
Notable bearers of the O'Carroll name
- Charles Carroll of Carrollton (1737–1832), signer of the American Declaration of Independence
- Daniel Carroll (1730–1796), signer of the US Constitution
- John Carroll (1735–1815), first Roman Catholic bishop of the United States, founder of Georgetown
- Lewis Carroll (Charles Lutwidge Dodgson, 1832–1898), mathematician, author of Alice's Adventures in Wonderland
- Carroll O'Connor (1924–2001), actor (All in the Family)