You may want to post your request on the County webpages for Laois & Cork in order to maximize the number of people viewing who may have your Duggans in their family trees.
All the best.
My records show that my ancestors from Caherduggan Parish, Co Cork were as follows:
Michael Duggan - 1773 and Johanna Barrett, 1775 (5 generations)
I am looking for anyone who has the same ancestorial connection and if they would know of any records previous to Timothy Duggan - Buried at Aughaboe, Co Laois and Mary Duggan (nee - Kelly of Cannanswood) - Buried 1876 @ Holy Trinity Church - Durrow Co Laois (My great/great/great/great/great grandparents). Their child was one Cornelius Duggan - 1816 - Co Cork who married Elizabeth Hawkins.
Any information would be appreciated. I can be reached at the address below.