looked at records, but no luck on parents of Patrick
MA marriage records show the marriage of Anna Kinney to Thomas Hopkins, 20 Aug 1873. That recirds shows her b 1853, Athol. https://familysearch.org/pal:/MM9.1.1/FHT2-3CV
1860 census of Cambridge MA Patrick Kenney, 28, b IRR, carpenter Margaret, 30, b IR Ann, 6, b MA John, 4, b MA Mary, 1, b MA neighbors, Patrick Calihan, 35, b IR; Richard Powers, 50(56?), b IR. Sometimes neighbors can shed light on maiden name of a spouse.
MA marriages on Family Serach show a Patrick Kenney md a Margaret Joyce(b 1825), 26 Oct 1859, Boston. A Patrick McKenna md a Margaret McCrossen(b 1830), 8 Jul 1852, Cambridge.
1870 censu of Hampden MA Patrick Kenney, 39 Margaret, 43(45?) Anna, 17 Thomas, 16 John, 14 David, 10
1900 census of Hampden MA Thomas Hopkins, 49 Anna, 47, b Jul 1852, MA Mary, 22 Isabella, 15 Anna, 11 David J, 8
Not sure these are a match, but hope something is helful
Looked for Patrick Kenney in 1850 census, but so many, could not find match.