James Foster McCoubrey ( 13 September 1901 -- 5 July 2013 ) was a Canadian American supercentenarian who was thought to have been the world 's oldest living man whose age has been verified ( by the Gerontology Research Group ) , from the death of 116-year-old Japanese man Jiroemon Kimura on 12 June 2013 until his own death less than one month later .
James Foster McCoubrey ( 13 September 1901 -- 5 July 2013 ) was an American supercentenarian who was the world 's oldest living man verified by the Gerontology Research Group . He was considered to be the world 's oldest living man since the death of 116-year-old Japanese man Jiroemon Kimura on 12 June 2013 until his own death less than one month later .