Complex sentence: He made his debut as Little Willie in East Lynne, played the aged Polonius in Hamlet when only 15, and later toured his own productions of Shakespearean plays all over Scotland.
Split into simpler sentences: He made his debut as Little Willie in East Lynne. He played the aged Polonius in Shakespeare's Hamlet when only 15, and later toured his own productions of Shakespearean plays all over Scotland.