I do not know specifically for the name Cunningham, but many, many Scottish names were in the Colonies by the early 1700's.
To say that the Cunninghams "emigrated" from Ireland to Scotland around 500 AD is probably too modern an interpretation of what happened. There was no customs and immigration back then. You can literally see Scotland from Ireland (and vice versa) so Celts (Gaelic speakers) went back and forth at will.
Be careful not to apply modern standards on that which happened before recorded history.
President, Clan Buchanan Society International
Bookmarks