 Though Thekkumkoor allied with Chempakassery and Vadakkumkoor to protect the kingdom, all of them were finally annexed to Travancore.The ruler of Thekkumkur had sided first with the Kingdom of Kayamkulam and then with the principality of Ambalapuzha against Travancore under Marthanda Varma.After the fall of Ambalapuzha, and as the ruler of Thekkumkoorr refused to come to terms with Travancore, his capital city was taken on 11 September 1750 by Ramayyan Dalawa, the general and prime minister of Marthanda Varma and the state was annexed to Travancore in 1753.