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 McGuiness is Mag Aonghusa or Mag Aonghuis, which mean "son of Angus."
from ancient times.
This web page shows only a small excerpt of our McGuiness research.Another 140 words (10 lines of text) covering the years 1539, 1543, 1584, 1640, 1703, 1797, 1798, 1868 and 1759 are included under the topic Early McGuiness History in all our PDF Extended History products and printed products wherever possible.
Many different spelling variations
of the surname McGuiness 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.