In the 1940 census, he appears to have lived in Boston's ward 10, with a wife Sarah (Gass) Katz and infant daughter Carol P Katz (Carol Phyllis Katz Littman, b. 1939). According to his death certificate (which includes several mistakes), Sarah's maiden name was Gass. They had at least two daughters.
1910-1930 census. Mass birth record. See Find a Grave for a photo of J. Allen's headstone.
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Featured National Park champion connections: J Allen is 21 degrees from Theodore Roosevelt, 27 degrees from Stephanus Johannes Paulus Kruger, 19 degrees from George Catlin, 21 degrees from Marjory Douglas, 29 degrees from Sueko Embrey, 20 degrees from George Grinnell, 31 degrees from Anton Kröller, 20 degrees from Stephen Mather, 24 degrees from Kara McKean, 22 degrees from John Muir, 21 degrees from Victoria Hanover and 32 degrees from Charles Young on our single family tree. Login to find your connection.