The parents are going to be tough unless you can access and read Russian records.
Here is their marriage record.
"Massachusetts Marriages, 1841-1915," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N46Q-88R : 25 May 2018), Julius Titelbaum and Ida Waldman, 18 Feb 1912; citing Boston, Suffolk, Massachusetts, United States, State Archives, Boston; FHL microfilm 2,409,944.