With the death of his uncle Marthanda Varma in 1758, Karthika Thirunal Rama Varma succeeded to the Travancore musnud. With the able services of the Dalawa Ayyapan Marthanda Pillai, Karthika Thirunal began his reign. Under his uncle's reign, Travancore had gained the reputation of being the most powerful state in Kerala and hence, many of the neighboring chiefs wished to execute friendship treaties with the Maharajah. The fortunes of the Cochin royal family were at the lowest ebb. A very small portion of their original territory alone remained in the Cochin Raja's possession. From 1755 AD, the Zamorin (Samoothiri) of Calicut Kingdom, was in possession of the major portions of Cochin. Although Marthanda Varma had promised help against the Zamorin by signing a treaty of alliance in 1756 with Cochin, he took no steps to help. Most of the barons of Kochi had sided with the enemy. The Dutch were the permanent friends and protectors of Cochin, but they withdrew their contingents from the field when the Zamorin promised to give back to them 'Chetwai' which he had conquered from them, on his way to Cochin. The Raja of Cochin deputed his nephew to ask for prompt assistance from Rama Varma. The recollections of the past shady dealings and breach of faith on the part of the Cochin rulers naturally had raised apprehensions in the Maharaja that his neighbour might not adhere to his promise when he felt his position secure. The same feeling might have prevented Marthanda Varma, his uncle, from rendering assistance immediately. Months passed. At last the Raja of Cochin met with Rama Varma to press his request. He strengthened his promises with the sanction of religion.