The prince Uthradom Thirunal-marthanda Varma died at the age of 91. Here is all you want to know, and more!
Biography - A Short Wiki
In the early 1990s, following the death of his brother Sree Chithira Thirunal Balarama Varma, Uthradom Varma assumed the title of Maharaja of Travancore.
He was the youngest boy born to Travancore Royal Family descendant Sethu Parvathi Bayi. His marriage to Shrimati Radhadevi Pandalai (official title: Ammachi Panapillai Amma) produced a daughter named Parvathidevi Kochamma and a son named Ananthapadmanabhan Thampi.