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I checked the free site www.irishgenealogy.ie and found the 1866 civil marriage record for the parents. The name of Anne's father is shown but John has "widow" Harkin so his father was deceased.
I also found civil birth records for Grace in 1870 Patrick in 1872 and John in 1873.
I did not see the family in the 1901 census. Did they emigrate?