Categories: Estimated Birth Date.
DOB is a placeholder - assuming younger than Aaron.
Marriage record for Aaron Blumenthal and Rebecca Blumberg:
Date: 1 Jun 1930;
Place: Montreal, Quebec
Groom's... Marital status: Widower; Father: Abram Blumenthal; Mother: Sarah Blumenthal
Bride's... Marital status: Spinster; Father: Max Blumberg; Mother: Hannah Benister[?] 
Have you taken a DNA test for genealogy? If so, login to add it. If not, see our friends at Ancestry DNA.