Kolattunādu (Kola Swarupam, as Kingdom of Cannanore in foreign accounts, Chirakkal (Chericul) in later times) was one of the four most powerful kingdoms on the Malabar Coast during the arrival of the Portuguese Armadas in India, along with Zamorin, the Kingdom of Cochin and Quilon. Kolattunādu had its capital at Ezhimala and was ruled by the Kolattiri royal family and roughly comprised the North Malabar region of Kerala state in India. Traditionally, Kolattunādu is described as the land lying between the Chandragiri river in the north and the Korappuzha river in the south. The Kolathunadu (Kannur) Kingdom at the peak of its power, reportedly extended from the Netravati River (Mangalore) in the north to Korapuzha (Kozhikode) in the south with the Arabian Sea on the west and Kodagu hills on the eastern boundary, also including the isolated islands of Lakshadweep in the Arabian Sea. The ruling house of Kolathunādu, known as the Kolathiris, were descendants of the Mushaka royal family, an ancient dynasty of Kerala, and rose to become one of the major political powers in the Kerala region, after the disappearance of the Cheras of Mahodayapuram and the Pandyan Dynasty in the 12th century AD. The Kolathiris trace their ancestry back to the ancient Mushika kingdom (Ezhimala kingdom, Eli-nadu) of the Tamil Sangam age. After King Nannan of the Mushika dynasty was killed in a battle against the Cheras, the chronicled history of the dynasty is obscure, except for a few indirect references here and there. However, it is generally agreed among conventional scholars that the Kolathiris are descendants of King Nannan, and later literary works point towards kings such as Vikramaraman, Jayamani, Valabhan and Srikandan of the Mushika Dynasty. The Indian anthropologist Ayinapalli Aiyappan states that a powerful and warlike clan of the Bunt community of Tulu Nadu was called Kola Bari and the Kolathiri Raja of Kolathunadu was a descendant of this clan. The more famous Travancore royal family is a close cousin dynasty of the Kolathiris. Though the Kolattiris were generally credited with superior political authority over the zone between the kingdoms of Canara and Zamorin's Calicut, their political influence was more or less confined to Kolattunādu. Ezhimala, their ancient capital, was one of the most important trading centres on the Malabar coast along with Quilon and Calicut, and found mention in the writings of Ibn Battuta, Marco Polo and Wang Ta-Yuan. In the course of