Hi Ann,I ran a search last night on the Cogley family in the Dublin area.There were 3 or 4 families listed,but not the ones you require.There are a lot of Cogleys in Liverpool so the chances are they sailed over to Dublin as its Just over the water so to say.I also checked out the IRISH FAMILY HISTORY FOUNDATION site .And no record on there.This does not mean they were not from Dublin it Just means the Records may not have been added .
Dublin Heritage site was also another i Checked there list shows nothing.The IGI lists a few names but again not the names you are searching for.In the 1911 Census of Dublin this you can find on the Irish National Archives site.They show just one Cogley a Bridget .
Hope this helps in some way
Mike