Wikipedia
The Kartabhaja , also known as the Kartabhaja Sampradaya , literally, the Worshippers of the Master, is a religious community of West Bengal in eastern India, which came into prominence in the mid 18th century. It had a significant following in the late 18th century and early 19th century, but its following declined considerably in the early 20th century.
The founder of this community was Aulchand or Aulechand ( 1686-1769), about whom very little is known, except a number of legends. Significant early leaders of this community were Ramsharan Pal, a disciple of Aulchand, his wife Sarasvati, popularly known as Sati Ma and their son Dulalchandra Pal. Under their leadership, Ghoshpara village (presently, a neighbourhood of Kalyani city) in Nadia district became a major centre of activities and later a pitha for the sect. An annual fair in Ghoshpara, known as the Sati Mar Dol Mela, is held in honour of Sati Ma on the day of Dol Purnima in February/March every year. This fair is attended by a large number of followers of this sect.