Complex sentence: Harold Osbaldestin (20 February 1909--September 1955) was a professional rugby league footballer who played in the 1920s, and 1930s, playing at club level for Salford, as a, i.e. number 1.
Split into simpler sentences: Harold Osbaldestin (20 February 1909--September 1955) was a professional rugby league footballer who played in the 1920s, and 1930s. He played at club level for Salford, as a, i.e. number 1.