Complex sentence: One legend says that at the mouth of the river in the Two Mountains area near Saint-Eustache, Quebec, loggers stormed into battle against the British, among them a fierce and bearded giant named Paul Bonjean, monikered as "Bonyenne".
Split into simpler sentences: One legend says that at the mouth of the river in the Two Mountains area near Saint-Eustache, Quebec, loggers stormed into battle against the British. Among them was a fierce and bearded giant named Paul Bonjean, or "Bonyenne".