It was the ruler of Eranad who later became the Zamorin of Calicut by annexing the port town of Calicut from Polanad, which was vassal to Kolathunadu. The ruler of Kingdom of Cochin also traces back to Ponnani in South Malabar. South Malabar was also the seat of the kingdoms of Parappanad, Vettathunadu, Valluvanadu, Nedungadis, and Palakkad.