Diane and Bill W: Your tree, Bill, is very helpful to me. It seems there are at least two Louisas. One, my great-grandmother died in 1904 in Montclair, NJ (the other died in 1934). Louisa, briefly, was married to Isaiah Deck, and ended up keeping her maiden name. Diane, yes, I have read Deck's account of his marriages and also a correction to some of his assertions, also printed in the NY Times. What a guy!!
Louisa and Isaiah Deck's only child, was my grandfather, Francis Halpin. He married F. Rosalie Tomes. They had three children: F. Murray, Eleanor, and John Hadden (my father). F. Murray married Margaret Merrick and had one child, Tucker, who died as a teen-ager. Eleanor married Stuart Stearns and also had one child, Murray S. Stearns who is still living. John Hadden Halpin married Josephine Roll. They had four children: John H. Jr.; Robert T.; William C. (me), and Sally. John H. Jr., Robert and William are all alive. John Jr. is father to John Hadden Halpin, III who in turn is father to John Hadden Halpin IV, and HE has a son, Austin Halpin.
So, long story short, for me, is that the Rev. Nicholas J. Halpin and Anne Grehem (also Graham) were my great-great grandparents.