So, Great-Aunt was Catherine/Kate Grant b. 1879 Tipperary, Ireland to Patrick & Johanna Grant (nee Grady) - she goes out to America in early 1899, ends up pregnant by October of that year. Son, Charles Swank b. 10 June 1900 in Philadelphia Almhouse - father is named as Charles Swank on baptism in All Saint's Chapel owned by the Almhouse (someone on Facebook found that for me). Apparently the father died in 1904 - can't find record of that or marriage, if there was one to Catherine.
In 1906, Catherine/Kate & Charles Swank come to Ireland - she leaves him here until late 1911 with her parents. In 1909 in Philadelphia, she marries William Alexander Salmon..marriage licence has her as Kate Swank - dates of birth are out a bit for her, but its definitely her. Have them on 1910 in Philadelphia. As I said, she comes back to Ireland in 1911 for Charles, and on the immigration, he is known as Charles Salmon. Fare paid by the US Navy. In 1915, the family are in New York - as per the 1915 NY State Census. William was in the Navy. And after that, I can't find a thing on them.
Would love to find more and break down a brick wall on her.
Cheers for any help,
Annie