Probably born in New York. Twin, Lester?
New York State Census, 1905, database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SPDT-L9C : 26 November 2014), Leslie Decker in household of Seymour D Decker, Union, Lestershire Village, E.D. 04, Broome, New York; citing p. 24, line 2, county offices, New York.; FHL microfilm 809,004.
"New York State Census, 1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:K9FV-Q9R : 8 November 2014), Lexley S Decker, Union, A.D. 01, E.D. 03, Broome, New York, United States; from "New York, State Census, 1915," database and images, Ancestry (http://www.ancestry.com : 2012); citing p. 09, line 28, state population census schedules, 1915, New York State Archives, Albany.
"New York State Census, 1925," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:KS9N-KP9 : 8 November 2014), Leslie Decker, Union, A.D. 02, E.D. 06, Broome, New York, United States; records extracted by Ancestry and images digitized by FamilySearch; citing p. 20, line 26, New York State Archives, Albany.
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