The plural of Ceann Mór is Cinn Mór. The Wiki entry on the Ceann Comhairle of Ireland has a footnote that gives the plural of ceann as cinn and also confirms that there are two nn's on the end (like Dé Danann *wink*). *S* In case anyone has forgotten the meaning of Ceann Mór, ceann means "head" or "clan chief" and adding mór indicates a chief over severel clans. See you on Friday for a chat and heather ale! LOL