MacByrne History, Family Crest & Coats of Arms
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The surname MacByrne was "O Broin," in its Gaelic form, which means descendant of Bran. The family is descended from Bran, the king of Leinster who died in 1052, who, along with King Conn of the Hundred Battles descended from Cathair Mor, an earlier king of Leinster, who was also monarch of all Ireland around 200 AD.
Early Origins of the MacByrne family
The surname MacByrne was first found in Leinster, where they were descended from Bran, the King of Leinster who died in 1052.  He was descended from Cathair Mor King of Leinster, who was also Monarch of all Ireland about 200 A.D. From this stem King Conn of the Hundred Battles was also descended. During the Strongbow invasion in 1172, the family, along with the O'Tooles, were driven from their original lands in county Kildare, settling the wilder territory between Rathdrum and Shillelagh, in south Wicklow.
"The O'Bymes anciently possessed the greater part of the Barony of Ballinacor, County Wicklow, and wore powerful Chiefs in that part of the country. Byrne is the leading name now in the Counties of Wicklow, Dublin, and Louth." 
The sept increased in importance, and like their similarly displaced neighbors, were especially noted for their lengthy and tenacious resistance to the English invaders. Their successes in this struggle were numerous. Their military exploits of this time are celebrated in a compilation by some thirty-five authors of Gaelic poetry called the Leabhar Branch (Book of the O'Byrnes).
Early History of the MacByrne family
This web page shows only a small excerpt of our MacByrne research. Another 35 words (2 lines of text) covering the years 1580, 1574, 1598, 1544, 1597, 1591, 1744, 1830, 1775 and 1799 are included under the topic Early MacByrne History in all our PDF Extended History products and printed products wherever possible.
MacByrne Spelling Variations
Within the archives researched, many different spelling variations of the surname MacByrne were found. These included One reason for the many variations is that scribes and church officials often spelled an individual's name as it sounded. This imprecise method often led to many versions. Byrne, Byrnes, O'Byrne, O'Byrnes and others.
Early Notables of the MacByrne family (pre 1700)
Notable amongst the family name at this time was Nicol Burne ( fl. 1574-1598), a Scottish Roman Catholic controversialist; Fiacha MacHugh O'Byrne (1544-1597), best remembered for helping in the escape of Hugh Roe O'Donnell from prison in Dublin Castle in...
Another 39 words (3 lines of text) are included under the topic Early MacByrne Notables in all our PDF Extended History products and printed products wherever possible.
Migration of the MacByrne family
To escape the religious and political discrimination they experienced primarily at the hands of the English, thousands of Irish left their homeland in the 19th century. These migrants typically settled in communities throughout the East Coast of North America, but also joined the wagon trains moving out to the Midwest. Ironically, when the American War of Independence began, many Irish settlers took the side of England, and at the war's conclusion moved north to Canada. These United Empire Loyalists, were granted land along the St. Lawrence River and the Niagara Peninsula. Other Irish immigrants settled in Newfoundland, the Ottawa Valley, New Brunswick and Nova Scotia. The greatest influx of Irish immigrants, however, came to North America during the Great Potato Famine of the late 1840s. Thousands left Ireland at this time for North America and Australia. Many of those numbers, however, did not live through the long sea passage. These Irish settlers to North America were immediately put to work building railroads, coal mines, bridges, and canals. Irish settlers made an inestimable contribution to the building of the New World. Early North American immigration records have revealed a number of people bearing the Irish name MacByrne or a variant listed above, including: Dinnis Byrne, who settled in Barbados in 1679; Adam O'Byrne, who settled in Jamaica in 1734; James and Patrick O'Byrne, who arrived in Philadelphia in 1806.
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The MacByrne Motto +
The motto was originally a war cry or slogan. Mottoes first began to be shown with arms in the 14th and 15th centuries, but were not in general use until the 17th century. Thus the oldest coats of arms generally do not include a motto. Mottoes seldom form part of the grant of arms: Under most heraldic authorities, a motto is an optional component of the coat of arms, and can be added to or changed at will; many families have chosen not to display a motto.
Motto: Certavi et vici
Motto Translation: I have fought and conquered.
- ^ MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)
- ^ Matheson, Robert E., Special Report on Surnames in Ireland with Notes as to Numeric Strength, Derivation, Ethnology, and Distribution. Dublin: Alexander Thom & Co., 1894. Print