 through the female line.With the accession of Uthram Thirunal in 1846 and his elder brother's exclusion from the line of succession due to imbecility, Ayilyam Thirunal became the Elaya Rajah or heir apparent of Travancore State.Of the seven children born to Rukmini Bayi, only four, including a daughter, Rani Lakshmi Bayi, survived and the eldest and third son were declared unfit to rule owing to mental incapacity.