Justin died July 22, 1861 in Chateaugay, New York at the age of 71. He is buried in the Smith-Green Cemetery in Chateaugay, New York.
Birth - Ancestry.com. Massachusetts, Town and Vital Records, 1620-1988 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc, 2011 Original data: Town and City Clerks of Massachusetts. Massachusetts Vital and Town Records. Provo, UT: Holbrook Research Institute (Jay and Delene Holbrook).
Residence - Year: 1860; Census Place: Chateaugay, Franklin, New York; Roll: M653_754; Page: 675; Image: 683; Family History Library Film: 803754.
Military - War of 1812 - Index of Awards on Claims of the Soldiers of the War of 1812, page 134.
Find A Grave, database and images (https://www.findagrave.com : accessed 21 April 2019), memorial page for Justin Day (10 Jul 1790–22 Jul 1861), Find A Grave: Memorial #134331639, citing Smith-Green Cemetery, Chateaugay, Franklin County, New York, USA ; Maintained by Gabe (contributor 48324009).