Kim Myeong-hwan 김명환 (金明煥) (b. 1917) Korean pro, 4 dan in 1959.
DuEm6: The Kim Myeong-hwan on this KBA's page reached 4 dan in 1970. Different person?
bugcat: Also not to be confused with the very well-known Kim Myeong-wan (or, as he prefers, "Myungwan Kim").