The Travancore Sisters grew up in a joint family tharavadu (Malaya Cottage) in Poojappura, Trivandrum. The matriarchial head of the family was Karthiyayini Amma, whose husband was P.K. Pillai (Palakunnathu Krishna Pillai of Cherthala) alias "Penang Padmanabha Pillai". P.K. Pillai had six sons, of whom.