I was just digging around online to see what I could find out about my Fullerton/Butler ancestors and came across your search.
I show that both James Fullerton and Eleanor Butler were born in Philadelphia, PA. My family is from their dauther Katharine and Edward Sweeney's daughter, Nellie E. Sweeney. I have Katharine's date of birth as 1/28/1861 and date of death as 5/5/12. She was buried on 5/9/12 at Holy Cross Cemetery in Philadelphia. I have Nellie's DOB as 2/22/1884 and DOD as 9/21/80. She was living in Atlantic City when she passed away. She married Thomas Taylor Erskine April 25th, 1904. Thomas was born 8/5/81 in Philadephia and died in Atlantic City on 12/22/1961. His father was Ebenezer Martin Erskine, who was born in Ireland around 1835 and died 3/31/1885 at the approximate age of 50. His mother was Clara Edith Erskine. The only information I have on her was that she died in February of '87, when Thomas was 5 1/2. Thomas then lived in an orphanage called "Presbyterian Children's Village" for three years and was accepted into Girard College 4/17/1890. He left Girard College in 1896 and went to live with his brother Edward M. Erskine. Thomas and Nellie had a son, Frank, and two daughters - my grandmother, Eleanor Erskine Kent and my great aunt Dorothy Walfish. I can fill farther down this line a bit, if you're interested, but I'm not sure which branch of Katharine Fullerton's line you're following. I do have a copy of her death certificate.