Could this be brother John. From U.S., World War II Draft Registration Cards?
John Stevenson
Birth 1 Jun 1882 Kirkintulloch, Scotland
Residence Place: Passaic, New Jersey, USA
Military Draft Date: 1942
Checking on SP. I can't see a birth in Kilmarnock for a John Stevenson in 1882

Monica
Added: Sorry. There was also an Ann Stevenson named at the same address (112 Wayne Avenue, Paterson NJ) Relationship not given.