|Born||10 May 1891
|Died||11 February 1971 (aged 79)
|Club||IK Sparta, Malmö|
Ernst Hilding Waldemar Nilsson (10 May 1891 – 11 February 1971) was a Swedish heavyweight wrestler who competed at the 1912, 1920 and 1924 Summer Olympics. He won a bronze medal in freestyle wrestling in 1920 and placed fourth-fifth in the Greco-Roman and freestyle contests in 1924. Nilsson won two world titles in Greco-Roman wrestling, in 1913 and 1922.
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