Following his ideological differences with the Communist International or the Comintern, Manvendra Nath Roy or M. N. Roy (originally Narendra Bhattacharya) left Europe and discreetly returned to India. He landed in Mumbai in November 1930 and stayed at the Theosophical Colony in Juhu under the alias 'Dr. Mahmood'. Soon after, he began imparting lessons in Marxism for the youth of Mumbai, and those dejected with the Gandhi-Irwin pact made a beeline for these lectures.
'Dr. Mahmood' also frequented the Girangaon area of Mumbai and addressed many a labour gathering there. Some members among the audience, during one such stimulating talk held near the French Bridge, suspected that 'Dr. Mahmood' must be the same person 'found missing' in Europe. The police kept a close watch on his movements thereafter.
Roy then joined the Congress movement under the alias 'Banerjee' but he was arrested on July 21, 1931 at Byculla. When he was eventually released in 1936, he was felicitated in Mumbai on December 6 of the same year. His registered marriage with Ellen Gottschalk on March 10, 1937 also happened in Mumbai.
From 1938 till his death in 1954, Roy checked in at Jamshedji Wadia's bungalow in Parel whenever he toured Mumbai. The first edition of his journal "Independent India" (later renamed as "Radical Humanist") was also released in Mumbai on April 4, 1937. When Roy formed the Radical Democratic party on December 20, 1940, the venue was again Mumbai. Such was his circumstantial yet celestial bonding with the historic city of Bombay.
Roy toured across the globe extensively for the sake of his vision, mission, and values and finally settled in Dehradun for sixteen years until his demise in 1954. His former Doon residence is fondly called "Humanist Home" in his everlasting memory. To know more about him in chronicle form, please refer to this one-of-a-kind treasure trove:
https://sreenivasaraos.com/2016/01/12/mn-roy-brief-outline-of-life-events-and-thoughts-part-02/