When Vikings invaded Ireland, many followed the same pattern as they had in France; they married local girls, adopted the culture and mellowed out. You can recognize a Viking name when you see fitz, which means “son of.” However, as is also common in history, people took the naming style of their new surroundings. Many a Viking who assimilated into Ireland added the prefix Mac, thereby making them appear Irish, just as people Anglicized their surnames in Colonial America after England took New Amsterdam from the Dutch.
Suellen Ocean is the author of Secret Genealogy – A How-to for Tracing Ancient Jewish Ancestry, Secret Genealogy II – Uncovering the Jewish Roots of Our Christian Ancestors and Secret Genealogy III – From Jewish Anglo-Saxon Tribes to New France Acadians. Available here:
Secret Genealogy II: http://www.amazon.com/Secret-Genealogy-II-Christian-Ancestors/dp/1484053222
Secret Genealogy III: http://www.amazon.com/Secret-Genealogy-III-Jewish-Anglo-Saxon-Acadians/dp/148407579X
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