The surname Coonan comes from the Irish surname O Cuanain (O'Conein and MacConein) and is derived from the Irish Cuinin for "rabbit", son of Dugal. They claim descendancy through the Donnelly line of the native Irish.
The surname Coonan was first found in County Tipperary (Irish: Thiobraid Árann), established in the 13th century in South-central Ireland, in the province of Munster, where Isaac O Cuanain was Bishop of Roscrea from 1161 to 1168. But the name was scattered throughout Ireland, some bearers being recorded in Kildare and the surrounding counties in the 16th century. Bearers of the name Coonan were also present in County Sligo, where O'Cunane was a principal Irish name in the census of 1659. The two baronies of County Leitrim which border County Sligo, had the name O'Conan listed in the same census.
This web page shows only a small excerpt of our Coonan research. Another 62 words (4 lines of text) covering the year 1666 is included under the topic Early Coonan History in all our PDF Extended History products and printed products wherever possible.
^ Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)