I got some information about Catherine Murphy Guilfoyle from Liberty Public Library, NY in 2000.
"I did contact the local historical society, which found an obituary in the Liberty Register Oct 10 1968. Here is the summary of it: Catherine Guilfoyle born in Longford County, Ireland Oct. 6 1899 and died Sept 24 1968 in Brooklyn, NY. She was a resident of the Swan Lake area for 37 years. A widow of Michael J. Guilfoyle JR., a former Customs officer who died Oct 2 1962. She is buried in St Peters Cemetery , Liberty. The obituary briefly stated that she was a Titanic passenger."
The librarian also wrote: "While researching this I ran into a person who knew someone who was Catherine Murphy s great-niece- Marie Norris. Marie visited this area in July 2000 and telephoned me regarding this.. According to her Catherine Murphy was her Great Aunt."
I wrote to Marie Norris about this in 2000, but never got a reply.