The surname Certain was first found in Cork (Irish: Corcaigh) the ancient Kingdom of Deis Muin (Desmond), located on the southwest coast of Ireland in the province of Munster, where they held a family seat as Chiefs of their race. Irish history was greatly influenced by the Norman invasion of 1172, and thereafter, the surnames of Irish Gaelic clanns and septs and many of the Norman families became almost indistinguishable. This family name was found later in Kerry and Limerick. Traditionally they are descended from the O'Connor and from the 3rd son of Fergus Mor, King of Ulster, who was ancestor of the Clann Cruitin.
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Early History of the Certain family
This web page shows only a small excerpt of our Certain research. Another 91 words (6 lines of text) are included under the topic Early Certain History in all our PDF Extended History products and printed products wherever possible.
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Certain Spelling Variations
Spelling variations of this family name include: Curtain, Crutin, Curtayne, McCruttin, McCurtain, McCurtaine, O'Curtain, O'Curtaine and many more.
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Early Notables of the Certain family
More information is included under the topic Early Certain Notables in all our PDF Extended History products and printed products wherever possible.
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Certain migration to the United States
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Some of the first settlers of this family name were:
Certain Settlers in United States in the 17th Century
Jacob Certain, who settled in America in 1676
Contemporary Notables of the name Certain (post 1700)
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François Certain Canrobert (1809-1895), French soldier and marshal
Certain migration to the United States 
France
Ireland
