In 1705, the son and two daughters of Ittammar Raja of Beypore Thattarikovilakam, a Kolathunadu royal house, were adopted into the Royal house of Venad.
Ittammar Raja's sister and her sons, Rama Varma and Raghava Varma, settled in Kilimanoor and married the now adopted sisters.
Marthanda Varma, the founder of the Kingdom of Travancore, was the son of Raghava Varma.
The nephew of Raghava Varma, Ravi Varma Koil Thampuran, married the sister of Marthanda Varma. Their son became known as Dharma Raja Kartika Thirunnal Rama Varma.