Show ContentsMaginniss History, Family Crest & Coats of Arms

While many of Irish names are quite familiar to most, their original Gaelic forms are often forgotten and mysterious. The original Gaelic form of the name Maginniss is Mag Aonghusa or Mag Aonghuis, which mean "son of Angus." 1

Early Origins of the Maginniss family

The surname Maginniss was first found in County Down (Irish:An Dún) part of the Province of Ulster, in Northern Ireland, formerly known as county St Mirren, where they held a family seat from ancient times.

Early History of the Maginniss family

This web page shows only a small excerpt of our Maginniss research. Another 140 words (10 lines of text) covering the years 1539, 1543, 1584, 1640, 1703, 1759, 1797, 1798 and 1868 are included under the topic Early Maginniss History in all our PDF Extended History products and printed products wherever possible.

Maginniss Spelling Variations

Many different spelling variations of the surname Maginniss exist in the archives researched. Ancient scribes and church officials recorded names as they were pronounced, often resulting in a single person being recorded under several different spellings. Different spellings that were found include Genis, Guinness, Magennis, Guinnessy, McGuinness and many more.

Early Notables of the Maginniss family

Prominent amongst the family at this time was Hugo Magennis (d. 1640) who was the Franciscan Bishop of Down and Connor; the second Viscount Iveagh, Brian Magennis who was killed in action in 1703; Richard and Richard the...
Another 38 words (3 lines of text) are included under the topic Early Maginniss Notables in all our PDF Extended History products and printed products wherever possible.

Migration of the Maginniss family

Irish families began to migrate to North America in the late 18th century in the hopes of gaining their own plot of land. The majority of these early immigrant families were relatively well off because the transatlantic passage was costly. As a result the decision to immigrate was carefully made. Those immigrants that arrived in the late 1840s differed because their decision to leave was in direct response to the Great Potato Famine. Many of the families that crossed the Atlantic during this decade were destitute, either having spent all they had on the fare or even starting with nothing, but being sponsored by a philanthropic society. Whenever, these Irish families came to North America, they were made great contributions to the developing nations of the United States and what would come to be known as Canada: the earlier settlers as land clearing homesteaders, and the later immigrants as the muscle that would build the industries and routes of transportation so critical to a powerful nation. Research into the passenger and immigration lists has shown many early and significant Irish immigrants bearing the name Maginniss: John Guinnessy, who settled in New York in 1849; William Guinnes who settled in Barbados in 1663; Pat and Mary Guinnessy who settled in Quebec with their ten children in 1849..



  1. MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)


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