Complex sentence: During the Peasants Revolt in 1381, the college was sacked by a mob of townspeople (and apparently some students) led by the Mayor who, according to the college, carried away its charter and plate.
Split into simpler sentences: During the Peasants Revolt in 1381, the college was sacked by workers and apparently by some students. Led by the Mayor who, according to the college, carried away its charter and plate.