Zoltan Bodnar – local player in the 1970s and well-known amongst problemists, passed away earlier this year. (source: Nigel Hanrahan)
Nigel indicates that Zoltan was published in ‘The Problemist’ 8 times between 1976 and 1991. See http://theproblemist.org/mags.pl?type=tp
Cecil Rosner most recently published one of his problems in 2014.
A search of the Winnipeg Free Press archives indicates that he was responding to the puzzles published in Abe Yanofsky’s column very frequently from 1966 to 1972
He won the Winnipeg High School Championship in 1968