The name Calnan comes from the Irish Gaelic O Cathalain. The Gaelic versions of today's Irish names demonstrate a link to a proud, ancient past. The name is possibly derived from Cathalan, king of Farney slain in 1028, whose name means Little Charles, and from whom the family is thought to have descended. Cathalan was in turn descended from Coleman Mor, the king of Meath and (the 133rd Monarch of Ireland).
from very ancient times.
This web page shows only a small excerpt of our Calnan research.Another 149 words (11 lines of text) covering the years 1027 and 1280 are included under the topic Early Calnan History in all our PDF Extended History products and printed products wherever possible.
Pronunciation, rather than spelling, guided scribes and church officials when recording names during the Middle Ages. This practice often resulted in one person's name being recorded under several different spellings. Numerous spelling variations
of the surname Calnan are preserved in these old documents. The various spellings of the name that were found include Callan, Callanan, Caillan, Calan, Calanan, Callen, Callin, Callon, Callinan, Callinon and many more.