Just found a border crossing record at Blaine, Washington, for the daughter, Anna, in 1939, who also indicates she was born in Petersburg, Russia on 26 February 1920; Romanian by race; Canadian by nationality. Going to her uncle, John Schuss in Tacoma, Washington. Names her mother-in-law, Bella MacDonald, and her husband, Hector James, in Vancouver, as her next of kin in Canada; however, she is not allowed to enter (debarred). Only had $1.75 with her.
Unfortunately, the marriage record for Anna indicates that her mother's name is unknown???? What happened to the other two children?
Just found Frank's death certificate (familysearch.org). Names his wife as Stefani Lisutina. Says his parents were both born in Russia, but that he was born in Romania.