Its author, Sadananda Yogendra Saraswati, was the son of Anantadeva Apadeva, and probably lived in mid-15th Century A.D. He also wrote Vedantasiddhanta-sarasangraha, Bhavaprakasa on Bhagavad Gita and Brahmasutra-tatpryaprakasa.
Sadananda, the author of Advaitabrahmasiddhi, published by Asiatic Society of Bengal, is a different author.