Hi , I too researched the clonehurke dunnes for years , my great grandmother Margaret was a daughter of Daniel and Mary Breen , sadly I never found a marriage cert for them , so don't have Daniels parents , they had a large family and I found all the kids births easily enough , I have had my ancestry DNA done but not much dunne info found , I have a tree on ancestry. Com which hopefully I can direct you too ,I will look into it after work today , cheers john