Hi, yes, sad news re John.
Italian Genealogy Group has Kings county NY (Brooklyn) marriage records through 1937.
In 1928 Ragnhild Braaten married Konrad Sumstad (see IGG website).
In 1934 the Brooklyn Daily Eagle ran a story on death of Konrad Sumstad in an auto accident. Survivors were wife Ragnhild and three-year-old daughter Marion.
84 Lawrence Ave, Kings, NY
Iscar Braten 38 Norway
John Braten 12 b NY son
Joan Braten 9 daughter
Betty Braten 6 daughter
Kignnild Sumstad 33 sister
Marion Sumstad 7 niece
The above shows the way the record is transcribed on Ancestry.com - the original is a little hard to read but clearly this is Oscar and Ragnhild.
A person with Sumstad name has created a Find-a-Grave memorial to Conrad:http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=11...
Might possibly be the same Marion:http://www.dowpub.com/public/CoDetail.asp?ID=17677