Complex sentence: Later, Kanan Devi married Haridas Bhattacharya around 1949, Haridas Bhattacharya, then ADC to the Governor of Bengal, eventually left the service to become a competent director of Kanan Devi's films.
Split into simpler sentences: Later, Kanan Devi married Haridas Bhattacharya around 1949. He eventually left the service to become a competent director of Kanan Devi's films.