swift family look up please

[saf]

hello,
      I am trying to find a Julia Janthe Swift [my great grandmother] I believe she was descended from Godwin Swift Esq of Swiftsheath Co Kilkenny, who was a descendant of Jonathan Swift author of 'Gullivers Travels'.
I have many names of Swift descendants, but can not fit her in.
She would have been born between 1850-1860 and she married Thomas Austin O'flaherty [doctor] who died in 1879.
They had a son Godwin Meade O'flaherty [no date of birth]
I would appreciate any information how ever small Thank you
                                     Mrs S A Foley