Brian London lost in 1966 to what professional boxer born 1942
Brian London:  He was the British and Commonwealth heavyweight champion from 1958 to 1959, and twice challenged for the world heavyweight title, losing to Floyd Patterson in 1959 and Muhammad Ali in 1966, both times via knockout. Muhammad Ali: Muhammad Ali ( ; born Cassius Marcellus Clay Jr.; January 17, 1942 – June 3, 2016) was an American professional boxer and activist.
Muhammad Ali