Gauri Mahadevi was the queen regnant of the Indian Bhauma-Kara dynasty's Kingdom of ToshalaA History of Orissa. N. K. Sahu · 1956 in c. 910-916. It is possible that she was in fact regent during the minority of her daughter queen Dandi Mahadevi, rather than a monarch in her own right.
She was married to Subhakaradeva V.Gupta, A. G. (2019). The Women Who Ruled India: Leaders. Warriors. Icons.. Indien: Hachette India.
She succeeded her late spouse on the throne when he died.Archana Garodia Gupta, The Women Who Ruled India: Leaders. Warriors. Icons. Not much is known about her reign. However, she is described as a successful ruler, who managed to maintain law and order within the kingdom. The Kumurang plate of Dandi Mahadevi stated that: "….. at her lotus-like feet was prostrate the entire population (of the kingdom)".
In 916, she was succeeded by her daughter Dandi Mahadevi.Gupta, A. G. (2019). The Women Who Ruled India: Leaders. Warriors. Icons.. Indien: Hachette India.
References
Archana Garodia Gupta, The Women Who Ruled India: Leaders. Warriors. Icons.