My great-great grandfather was Cornelius Augustus(I think) Duggan, born around 1841-42 in Bandon, Kilbrogan, Ireland. He married Ellen(Leary?),born in 1844; my great-grandmother, Margaret,was born in 1873, in Somerville, Massachusetts. Indeed, the name changed from Duggan--or perhaps Dugan--to Durgin when they arrived. (Must have been the brogue!)