Baba Sawan Singh also known as "The Great Master" or "Bade Maharaji" was an India

India

India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

n Saint. He was the second Satguru

Satguru

Satguru does not merely mean true guru. The term is distinguished from other forms of gurus, such as musical instructors, scriptural teachers, parents, and so on...

 of Radha Soami Satsang Beas

Radha Soami Satsang Beas

Radha Soami Satsang Beas is a spiritual society founded by Jaimal Singh in 1891 at a site called Dera Baba Jaimal Singh on the West bank of the Beas River, Punjab, India....

 (RSSB) from the death of Baba Jaimal Singh

Jaimal Singh

Baba Jaimal Singh Ji , also known as "Babaji Maharaj," was the first Satguru of Radha Soami Satsang Beas until his death in 1903. Baba Sawan Singh succeeded him as the second RSSB Satguru....

 in 1903 until his own death on April 2, 1948.
Before he died he appointed Sardar Bahadur Jagat Singh as his spiritual successor at Beas.
Disciples of his who after his death have formed separate spiritual missions at other places in India include Sant Kirpal Singh, Baba Somanath, Pritam Das, Shah Mastana Ji and Ishwar Puri.

Hazur Baba Sawan Singh Ji was born into a Sikh

Sikh

A Sikh is a follower of Sikhism. It primarily originated in the 15th century in the Punjab region of South Asia. The term "Sikh" has its origin in Sanskrit term शिष्य , meaning "disciple, student" or शिक्ष , meaning "instruction"...

 family on 27 July 1858 in village Jatala, District Ludhiana.