Show ContentsMcBrennane History, Family Crest & Coats of Arms

Many variations of the name McBrennane have evolved since the time of its initial creation. In Gaelic it appeared as "O Braondin," from the word "braon," which has several meanings, possibly meaning "sorrow" in this case.

Saint Brendan or Brenainn (490?-573), of Birr, "which was so called from the abundance of wells there (birr, birra, water), now Parsonstown, in the King's County. He was son of Neman, a poet, and Mansenna, and belonged to the race of Corb Aulam, great-grandson of Rudhraighe, from whom were the Clanna Rudhraighe. " 1

Another Saint Brendan or Brenainn (484-577), of Clonfert, was born in 484, at Littus li, or Stagnum li, now Tralee, co. Kerry. "He is termed son of Finnloga, to distinguish him from his contemporary, St. Brendan of Birr. " 1

Early Origins of the McBrennane family

The surname McBrennane was first found in County Kilkenny (Irish: Cill Chainnigh), the former Kingdom of Osraige (Ossory), located in Southeastern Ireland in the province of Leinster, where the family claim descent from Braonan, an Irish Prince, brother of Ceallach, 17th King of Ossory. Braonan later became the King of Ossory, and also King of the Danes of Dublin, and was known as the Prince of Idough. His son, Conglach, in a dispute over the throne of Ossory, was killed near Three Castles, County Kilkenny.

At this point in time, the Brennans were in conflict with Brian Boru (1014), and most historians believe that the family was on the wrong side as allies of the Danish King. After Clontarf, they retained only the principality of Idough, but Anne, daughter of Guidhelgedh, three generations later, married the King of Ossory (Donogh), and the title was still extant even after the Anglo Norman invasion of 1172.

Early History of the McBrennane family

This web page shows only a small excerpt of our McBrennane research. Another 124 words (9 lines of text) covering the years 1395, 1520, 1600, 1625, 1693, 1768, 1794, 1830 and 1832 are included under the topic Early McBrennane History in all our PDF Extended History products and printed products wherever possible.

McBrennane Spelling Variations

A name was often recorded during the Middle Ages under several different spelling variations during the life of its bearer because literacy was rare there was no real push to clearly define any of the languages found in the British Isles at that time. Variations found of the name McBrennane include Brennan, McBrennan, Brannon, Brannan, Brannen, Brannin, Brennyn, Brannyn, MacBrennan, Brenan, Branon, Branan, Branen and many more.

Early Notables of the McBrennane family

Notable among the family name at this time was Sir Art O'Brennan of Castlecomer Castle; Most Rev. John Brennan (1625-1693), Bishop of Waterford and Archbishop of Cashel; John Brennan (1768-1830)...
Another 29 words (2 lines of text) are included under the topic Early McBrennane Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the McBrennane family

Death and immigration greatly reduced Ireland's population in the 19th century. For the native Irish people poverty, hunger, and racial prejudice was common. Therefore, thousands left their homeland to seek opportunity in North America. Those who survived the journey and the quarantine camps to which they arrived, were instrumental towards building the strong developing nations of the United States and the future Canada. By far, the largest influx of Irish settlers occurred with Great Potato Famine during the late 1840s. These were employed as construction or factory workers. An examination of passenger and immigration lists has shown early immigrants bearing the name McBrennane: James Brennan, a bonded passenger, who arrived in Potomac in 1731;Timothy Branen who settled in Placentia, Newfoundland, in 1744; Laurence Brennan, on record as a laborer in St. John's Newfoundland in 1779.



  1. Smith, George (ed), Dictionary of National Biography. London: Smith, Elder & Co., 1885-1900. Print


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