Complex sentence: William surrendered custody of Taunton Castle to Peter de Taraton in July and was in charge of purchasing the royal wine in August, but no further naval duties are recorded until November, when along with Cornhill he was in charge of assessing the ports.
Split into simpler sentences: William surrendered custody of Taunton Castle to Peter de Taraton in July and was in charge of purchasing the royal wine in August. No further naval duties are recorded until November, when along with Cornhill he was in charge of assessing the ports.