After searching the
Wikipedia for the last name Connolly, it said that there are 5 unrelated families where the anglicized version of Connolly comes from:
Ó Conghalaigh of Iar Connacht (now County Galway);
Ó Coingheallaigh in the Kingdom of Desmond (now west County Cork);
Ó Conghalaigh of Derrygonnelly, Fear Manach (now County Fermanagh);
Ó Conghalaigh of Airgíalla (now County Monaghan and/or County Meath);
Ó Conghaile Muirthemne from County Louth.
Is there any way to know which one my name could come from? As far as I know, no one is from any of those parts exactly, however; my close relatives (20th century) are from Ulster so it could be the last three families. Also, according to my ancestry DNA (not perfect I know), I got marked for strong DNA in Munster, so that could possibly be the second name.
Let me know if there is any more research I could do. I got some good help when I asked a question more than a year ago. I hit a roadblock in the mid-1800s of my Irish/namesake side. I hope everyone is doing well.
Cheers--