Complex sentence: When he was 16 years old, in 1893, he helped found Tredegar Harriers, the forerunner of Tredegar and in 1958 he raised the Tredegar R.F.C standard to the masthead over their headquarters.
Split into simpler sentences: When he was 16 years old, in 1893, he helped found Tredegar Harriers, the forerunner of Tredegar. In 1958 he raised the Tredegar R.F.C standard to the masthead over their headquarters.