MY FATHER'S NAME WAS JOHN PATRICK HALLAHAN. HE WAS BORN TO JOHN PATRIC HALLAHAN AND FRANCIS HARRIS HALLAHAN ON THE ROAD IN VAUDEVILLE. (I BELIEVE IN NEW YORK) HE GREW UP IN CHICAGO, IL, AND EVENTUALLY MARRIED ELIZABETH JOAN VANTREESE. I HAVE NO INFORMATION ON WHO HIS GRANDPARENTS ON HIS FATHER'S SIDE WERE (HALLAHAN, BUT USED THE STAGENAME OF "HALLEN"). ANY HELP AVAILABLE?