Aswathi Thirunal Umayamma, popularly known as Umayamma Rani, was the Regent of Venad from 1677 to 1684 on behalf of her nephew Rajah Ravi Varma who ruled thereafter till 1718.
Read more about Umayamma Rani: State of Venad, The Royal Family, Adoption of Heirs, Description of Umayamma Rani, See Also