Musil (feminine Musilová) is a Czech surname, which means "he had to", from the past tense of the Czech word musit (must). The equivalent surname in Polish is Musiał, also spelled Musial. Notable people include: Alois Musil (1868–1944), Czech explorer and writer. Bartolo Musil (born 1974), Austrian musician. Bohumil Musil (1922–1999), Czech football player and coach. Cyril Musil (1907–1977), Czech skier. David Musil (born 1993), Czech ice hockey player. Donna Musil (born 1960), American filmmaker. Frank Musil (born 1964), Czech ice hockey player and coach.
https://en.wikipedia.org/wiki/Musil