Gilbert was born in 1902. He was the son of John Blackwelder and Helena Alderman. He passed away in 1975. [1]
https://www.findagrave.com/memorial/28935243/gilbert-theo-blackwelder
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:V9SV-5ZF : 20 May 2014), Gilbert Blackwelder, Feb 1975; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: ...
"Florida Death Index, 1877-1998," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VVZY-N1F : 25 December 2014), Gilbert Theo Blackwelder, 18 Feb 1975; from "Florida Death Index, 1877-1998," index, Ancestry (www.ancestry.com : 2004); citing vol. ...
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Featured National Park champion connections: Gilbert is 16 degrees from Theodore Roosevelt, 22 degrees from Stephanus Johannes Paulus Kruger, 15 degrees from George Catlin, 17 degrees from Marjory Douglas, 21 degrees from Sueko Embrey, 17 degrees from George Grinnell, 28 degrees from Anton Kröller, 18 degrees from Stephen Mather, 24 degrees from Kara McKean, 18 degrees from John Muir, 17 degrees from Victoria Hanover and 26 degrees from Charles Young on our single family tree. Login to find your connection.
B > Blackwelder > Gilbert Theo Blackwelder