Kannur was the capital city of Kolathunadu, one of the four powerful kingdoms who ruled Kerala during the medieval period. Arakkal Kingdom and Chirakkal kingdom were two vassal kingdoms based in the city of Kannur. The port at Kozhikode held the superior economic and political position in medieval Kerala coast, while Kannur, Kollam, and Kochi, were commercially important secondary ports, where the traders from various parts of the world would gather.[1] St. Angelo Fort was built in 1505 by Dom Francisco de Almeida, the first Portuguese Viceroy of India.