Narasimha Saraswati (1378−1458) नरसिहसरस्वती is the Purna Avatar of Dattatreya(As per "Shripad Shrivallabha Charitra" he is second avatar of Dattatreya).He was born in Karanjapur which is modern Lad-Karanja or karanja in Maharashtra Vidbaraba region.
Shri Narasimha Saraswati was initially named as Narahari or Shaligramadeva. His father's name was Madhav and mother's name was Amba-Bhavani. His surname was Kale. He was born in a Deshastha Brahmin family Shukla-yajurvedi Brahman Kanva Shaka. At Karanja there is the original house where he was born. Although the house is no longer in the original shape, but still some parts remain and have been converted in to a temple.
Shri GuruCharitra is a book which describe a life of Shri Narasimha Saraswati. The writer of this book is Saiam Dev. Saiam Dev Guru told this Shri Guru Charitra. Saiam Dev's Guru was one of the successor of Shri Narasimha Saraswati Maharaj.
Ganagapura or Gangapur is the place where he spend more than 20 years of his life.
गुरुर्ब्रम्हा गुरुर्विष्णु गुरुर्देवो महेश्वराः |
गुरुः साक्षात्परब्रम्ह तस्मै श्रीगुरवे नमः ||
As per "Shripad Shrivallabha Charitra" Dattatreya have 3 Avarat