Complex sentence: In 1967 he went to Magdalen College, Oxford (B.A., M.A.-History) where he was a pupil of Karl Leyser, Hugh Trevor-Roper and Howard Colvin.
Split into simpler sentences: In 1967 he went to Magdalen College, Oxford (B.A., M.A.-History). At the university he was a pupil of Karl Leyser, Hugh Trevor-Roper and Howard Colvin.