My grandfather was John Glacken from Emmitsburg MD. He was born around 1880's or earlier. He was told he was the illegitimate son of James Glacken. I know he was a memeber of Mount St. Mary's Catholic Church and was suppose to be a nephew to William Glackens the famous painter from the Ashcan group. John Glacken's mothers last name was Reeves. Ancester were thought to be from Donegal Ireland. If any of this helps please let me know.