Complex sentence: Charles Smith Jr. was a professional rugby league footballer who played in the 1910s, playing at club level for Wakefield Trinity (Heritage № 204), as a, i.e. number 1.
Split into simpler sentences: Charles Smith Jr. was a professional rugby league footballer who played in the 1910s. He played at club level for Wakefield Trinity (Heritage № 204), as a, i.e. number 1.