Complex sentence: Montgomery "Bud" Wilson was a Canadian figure skater who won 9 Canadian championship titles in men's single skating between 1929 and 1939, and holds the record for the most Canadian titles won by any skater.
Split into simpler sentences: Montgomery "Bud" Wilson was a Canadian figure skater. He won 9 Canadian championship titles in men's single skating between 1929 and 1939, and holds the record for the most Canadian titles won by any skater.