David and his family lived just down the street from his brothers Pomeroy and Isaiah. All three worked at Corning Glass.
New York State Census, 1905, database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MVBD-3GW : 3 April 2016), David Smith, Corning, Ward 04, E.D. 05, Steuben, New York; citing p. 19, line 21, county offices, New York.; FHL microfilm 512,432.
Find A Grave, database and images (https://www.findagrave.com : accessed 30 January 2018), memorial page for David F Smith (1872–1924), Find A Grave Memorial no. 109704383, citing Coopers Plains Cemetery, Coopers Plains, Steuben County, New York, USA ; Maintained by Kathy Jennings Brown (contributor 47272624) .
It may be possible to confirm family relationships with David by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with David: