Recommend that you return to that search engine seeking a Death Notice or OBIT for him. That might give you the wife's maiden name. In the meantime, this is the only marriage I could locate for groom checking 1920-1937...as far as the index goes. Bride's name=???
Olcott Joseph Mar 16 1933 810 (1933) Queens 1905572 Slaughter, Theresa