Patrick FOX's parents were Patrick FOX and Mary WARREN
They are shown on the 1901 census as aged 50 and 40 respectively -
LINKResidents of a house 67 in Harolds Cross Road (Part) (Rathmines, Dublin)
living with their children
Patrick Joseph b.Feb 29 1876
Hugh Joseph b.Sep 18 1877
Anne/Annie b.Apr 16 1877
Thomas b.Aug 12 1881
Margaret (Maggie) b.May 20 1885
Bridget Mary b.Apr 28 1887
Catherine Mary (Kate) b.Sep 04 1889
also in the house was Patrick's wife Elizabeth (Lizzie) nee BUTLER and their eldest child Patrick
by 1911 they were aged 62 and 50 respectively -
LINKResidents of a house 51.2 in Clanbrassil Street, Lower, East Side (Wood Quay (part of), Dublin)
living with children Hugh, Thomas, Maggie and Kate; grandchild Francis Thorpe (son of Bridget) and a cousin Lizzie WARREN
There are discrepancies in their ages as the 1911 census states Mary FOX was aged 50 but also that she was 50 years married; possibly a badly written 30 - they actually married in 1875; this in turn implies Mary WARREN was only 15 years old when she married. So much not to take for granted!
I have not purchased the marriage certificate of Patrick FOX and Mary WARREN to find out fathers' names etc.; several of their children had baptism sponsors named WARREN