Don't know if any of this helps. There is a Patrick Kennedy is Boston, Ward 2 in1900 - and census says 'house closed'?
U S Census, 1860 2nd Ward City Of Boston, Suffolk, MA
Citing this Record: "United States Census, 1860," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MZC7-TSV), Patrick Kennedy in household of Bridget Kennedy, 2nd Ward City Of Boston, Suffolk, Massachusetts, United States; citing "1860 U.S. Federal Census - Population," Fold3.com; p. 203, household ID 1670, NARA microfilm publication M653; FHL microfilm 803520.
Bridget Kennedy F 30 Ireland
Mary Kennedy F 8 Massachusetts
Joanna Kennedy F 7 Massachusetts
Margaret Kennedy F 6 Massachusetts
Patrick Kennedy M 2 Massachusetts
Massachusetts, State Census, 1865 Boston, Ward 02, Suffolk, MA
Citing this Record: "Massachusetts, State Census, 1865," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MQH7-), Patrick Kennedy in household of Bridget Kennedy, Boston, Ward 02, Suffolk, Massachusetts; State Archives, Boston; FHL microfilm 954374.
Bridget Kennedy F 40y Ire Widow
Mary Kennedy F 13y Mass
Johanna Kennedy F 12y Mass
Margaret Kennedy F 9y Mass
Patrick Kennedy M 6y Mass
U S Census, 1900 ED 1180 Precinct 6 Boston city Ward 2, Suffolk, MA
Citing this Record; "United States Census, 1900," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/M9YS-VR7), Patrick C Kennedy House closed, Precinct 6 Boston city Ward 2, Suffolk, Massachusetts, United States; citing sheet 6B, family 114, NARA microfilm publication T623, FHL microfilm 1240676.
Name: Patrick C Kennedy
Titles and Terms: House Closed ?