Complex sentence: John Carpenter (1370? -1442?), was an important figure in the early history of the city of London who left property in his will which eventually led to the founding of the City of London School.
Split into simpler sentences: John Carpenter (1370? -1442?), was an important figure in the early history of the city of London. He left property in his will which eventually led to the founding of the City of London School.