Complex sentence: William "Willie" H. Aspinall is a professional rugby league footballer who played in the 1960s, and 1970s, playing at representative level for Great Britain, and at club level for Warrington, and Rochdale Hornets, as a, i.e. number 6.
Split into simpler sentences: William "Willie" H. Aspinall is a former professional rugby league footballer who played in the 1960s, and 1970s. He played at representative level for Great Britain, and at club level for Warrington, and Rochdale Hornets, as a, i.e. number 6.