Complex sentence: A second siege was imposed by the same Coja Sofar, in 1546, and repelled by the Portuguese conquerors, led on land by D. John Mascarenhas, and at sea, by D. João de Castro.
Split into simpler sentences: A second siege was imposed by the same Coja Sofar in 1546. It was repelled by the Portuguese conquerors, led on land by D. John Mascarenhas and at sea by D. João de Castro.