I have some information that may or may not help some people. John Grugan came to America from somewhere in Ireland in about 1880. He was married here in philadelphia in 1888, to ann mcdonnell. any grugans in the philadelphia area may find this useful. could someone tell me the story with the change of grogan to grugan? I have not been able to track the grugans to their county because i was never sure what name i was looking for.