Nothing is currently attached to this name on our shelves, and the useful thing to do is say so plainly. Ratan Biswas exists in our index as an author credit. No verified source material accompanies it, and no recording is presently listed against it.
The alternative would be to write around the silence, which is how confident nonsense finds its way into print. Common names in particular collect the wrong biographies, and a paragraph stitched together from whoever else shares the spelling would read smoothly while being about a complete stranger. A thin page can be corrected the moment better information arrives. A wrong one simply gets believed.
