Sree Padmanbhadasa Sree Chithira Thirunal Balarama Varma GCSI GCIE , popularly known as Sree Chithira Thirunal, was the last ruling Maharaja of the Princely State of Travancore, in southern India until 1949 and later the Titular Maharajah of Travancore until 1991. Sree Chithira Thirunal was the eldest son of Junior Maharani of Travancore, H.H. Sree Padmanabhasevini Vanchipala Dyumani Rajarajeshwari Maharani Moolam Thirunal Sethu Parvathi Bayi, and Sri Pooram Nal Ravi Varma Koyi Thampuran of the Royal House of Kilimanoor. He was privately educated, and became the Maharajah of Travancore, at the age of 12, upon the death of his maternal great uncle, the then Maharajah of Travancore Sree Moolam Thirunal, on August 7, 1924. He reigned under the regency of his maternal aunt, Sethu Lakshmi Bayi , until he came of age and was invested with full ruling powers on November 6, 1931.
Sree Chithira Thirunal was the eldest son of Sethu Parvathi Bayi, popularly known as Amma Maharani, the Queen Mother and Junior Maharani of Travancore, by her consort, Ravi Varma Kochu Koyi Thampuran of Royal House of Kilimanoor, a Sanskrit scholar and the greatnephew of the celebrated painter Raja Ravi Varma. He was born on a Deepavali day on November 7, 1912, as the Heir Apparent to the throne of Travancore. His siblings were Karthika Thirunal Lakshmi Bayi and Uthradom Thirunal Marthanda Varma. Sree Chithira Thirunals mother, Sethu Parvathi Bayi, was distantly related, by birth, to the royal house of Travancore in the direct female line. In 1900, following the absence of heirs in the Travancore Royal Family, she had been adopted by her maternal greataunt. According to the matrilineal traditions of the Travancore Royal Family, Sree Chithira Thirunal, at the time of his birth, was proclaimed the Heir Apparent of Travancore with the title of160 Sree Padmanabhadasa Maharajkumar Sree Bala
Source: Wikipedia