I hope you dont mind me joining in. Yes there are lots of Dunicans in Pullough (thats how it is spelled here) If it is ok I am going to post you query to a closed Pullough group and I know that there are a few Dunicans on that group.
Attached is the marriage record for Edward - Dunican is spelled funny - Donakin to Elizabeth Winne - dont know if you have this already. They got married in the Catholic Church in Ferbane (about 6 miles from Pullough) 4th April 1864. Edwards father was Thomas Donakin and Brides father was Laurance Winne.