Map of Ireland showing where the O'Shaughnessy arms are recorded
The O'Shaughnessy arms were recorded in Ireland, c. 1100.
Arms such as these were typically recorded in Dublin.
Dublin was the seat of government in Ireland and the place where grants were sought and recorded. Families with business at the castle or the courts settled nearby, and settling there put their arms on record.
This is where the arms were entered in the register. Families often moved to other parts of the country, so the same name can turn up in more than one region.
The body that granted and recorded arms in Ireland in this period.
William II of England
Sovereign of the period
William II of England
1087–1100
Reigning in Ireland when the O'Shaughnessy arms are first recorded.
How Arms Worked in Ireland
The Ulster King of Arms granted coats of arms to individuals who proved their social standing and good character. These symbols were typically inherited by all legitimate descendants of the original holder. If a family branch wanted a unique look, they could apply for a specific change to their design through the office to ensure their identity remained distinct.
Granting authority
The Ulster King of Arms acted as the official body that regulated and issued all coats of arms throughout Ireland.
How they got arms
Families obtained their arms through formal grants issued by the office after proving their eligibility and paying the required fees.
Where arms were recorded
All official grants were recorded in the registers held by the Ulster King of Arms starting from the year 1552.
The family's standing
Recorded among the armigerous families of Ireland.
Origin & History of the O'Shaughnessy Family in Ireland
The O’Shaughnessy family name originates from the Gaelic name Ó Seachnasaigh, which translates to the descendant of Seachnasach. Historical evidence confirms that members of this family were established in the Dublin area as early as the 12th century. During this period, the family belonged to the Cenél nEógain, a powerful group that held significant influence across parts of Ireland. As the family grew, they became deeply connected to the political and social structures of the time, often serving as local leaders and landowners. Their presence in Dublin during the 1100s highlights their long-standing role in Irish history, as they navigated the shifting alliances and territorial changes that defined the medieval era.
Related Branches & Arms
Root word
Seachnasach
Derived from the Irish word for sensible, prudent, or wise.
This name
O'ShaughnessyDescendant of the grandson of the sensible or prudent one.
also spelled
Shaughnessy
Shaghnessy
Documented Sources
Sir Bernard Burke, The General Armory of England, Scotland, Ireland and Wales, London: Harrison & Sons, 1884
O'Donovan, John. Annals of the Kingdom of Ireland by the Four Masters. 1856
Woulfe, Patrick. Sloinnte Gaedheal is Gall: Irish Names and Surnames. 1923
Digital archive packCoat of arms PNG, gold border print PDF, vector SVG and the certificate of authenticity. Sent to your email in minutes.
towerGrandeur and solidity, and a stronghold defended
flag / pennantA command held, and a following kept
lionCourage, strength and royalty
towerGrandeur and solidity, and a stronghold defended
flag / pennantA command held, and a following kept
lionCourage, strength and royalty
