Who is the author of the famous 'Brihat Guru Charitra' and who was it about?

The author of the biography now famous as the Brihat or Thorale Guru Charitra is Shri Saraswati Gangadhar. According to chapter 0, this work is described as a sweet, succulent, and graceful biography. The subject of this revered text was Shri Samarth Sadguru Narsimha Saraswati Maharaj, who was a resident of Audumbar, Wadi, and Ganagapur. This book is noted as one of the very few detailed and comprehensive works suitable for Parayans and is studied daily in thousands of places.