Complex sentence: It was at that time that the great and talented poet Kunjan Nambiar was installed in the court ae who was known as the "Maker of modern Alleppey" made Alappuzha a premier port town of Travancore.
Split into simpler sentences: It was at that time that the great and talented poet Kunjan Nambiar was installed in the court. He was known as the "Maker of modern Alleppey" and played a key role in making Alappuzha a premier port town of Travancore.