Son of Richard Gammon and Mary J. Hopkins. Died 12 May 1919 in Cavendish, Vermont at the age of 70.
Sources
"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VNRN-PWS : 6 December 2014), Henry P Gammon, 12 May 1919, Death; State Capitol Building, Montpelier; FHL microfilm 1,993,003.