Complex sentence: William A. Armstrong was a professional rugby league footballer who played in the 1920s, playing at club level for Wakefield Trinity (Heritage № 255), as a, or, i.e. number 9, or, 11 or 12.
Split into simpler sentences: William A. Armstrong was a professional rugby league footballer who played in the 1920s. He played at club level for Wakefield Trinity (Heritage № 255), as a, or, i.e. number 9, or, 11 or 12.