Raja Jagannath Prasad Singh Kinkar (died 1938) was an Indian ruler of Deo Raj, a princely estate in present day Aurangabad district of Bihar.
People from Gaya, Jehanabad, Aurangabad, Nawada, Sasaram and Patna had reached there to watch it.
[4] After his first success, Raja Saheb produced a feature film, 'Vilvamangal' on the love story of Surdas in 1932 under the banner of Mahalaxmi Movie Tone.
The story and dialogue writer was Raja Jagannath Prasad Singh himself, the screenwriter and director were Dhirendra Nath Ganguly, and AK Sen and S. David did the cinematography of the film.
It was ceremonially held at Ranchi and inaugurated by Sir Maurice Garnier Hallett, the Chief Secretary to the Government of Bihar and Orissa Province.