Kate came to the US at age 4, in the early 1840's, with her father. They lived in or near Watertown (Jefferson County) Wisconsin for several years, then moved to Fond du Lac.
I have never heard a word about her mother, apparently she died young. Her death certificate lists her father as "Martin", but after "mother's name" there is just a question mark.
Her father supposedly left her in the care of his cousins, named Fenlan or Fenelon when she was 7 or so, and vanished.
It was family legend that he was murdered.
She married Daniel Kennedy in the mid 1860's.
Her father may have been named Martin, per her death cert, or James, or John, per different family members.
She had an uncle (possibly) named Owen Fitzpatrick, and another Catherine Fitzpatrick, who may have been an aunt or cousin, married a Fenelon.
She died in September 1919, at 74, weakened by an aftermath of the flu epidemic.
Kate was my great grandmother.