Hi Judi, 

I believe that these  Friedmans are two of the children you are looking for, 
Frank Friedman (1906 - 1983)
Birth record 
https://www.familysearch.org/ark:/61903/1:1:2W8B-SDS
Grave
https://www.findagrave.com/memorial/79438868/frank-friedman

Jacob Abraham Friedman  (1885-1918)
Marriage record 
https://www.familysearch.org/ark:/61903/1:1:249Z-LS4
Death record 
https://www.familysearch.org/ark:/61903/1:1:2WNL-73C
Grave
https://www.findagrave.com/memorial/117186653/jacob-a-friedman

Giannis Daropoulos 

Greece