[1] Considered as foremost independent screenwriter in Sri Lankan cinema, Seneviratne wrote several popular films such as Kurulu Bedda, Sikuru Tharuwa, Parasathu Mal and Ran Salu.
[2][3] Seneviratne was born on 17 May 1917 in Hakgalla Ellakkala village in Attanagalla, Gampaha, Sri Lanka.
He later published the poetry collections such as Attanagallu Nadi Kavyaya, Ditta Mangalika, Gambada Sundari, Unmada Chithra and Ganga Kumariya.
He had a close relationship with other poets of his era including, Sri Chandraratne Manawasinghe, S. A. James, Dharmadasa Kuruppu, Chithra Balasuriya, Mahagama Sekera, Meemana Premathilake and Wimalasiri Perera.
[5] He started his teaching career as a senior assistant teacher at the Morawaka Buddhist Mixed School and Gaspe College in Nelumdeniya.
Later he wrote the script of the popular film Ranwan Karal directed by Prof. Siri Gunasinghe with a narrative style screenplay.
On 26 November 1966, his emotional poetry titled Mage Kshema Bhoomiya was published in the Silumina newspaper.
On 18 October 1967, Varayet Magazine in the United States of America highlighted that the dialogue and direction of the Ran Salu film was of a very high standard.
Meanwhile, from 1968 to 1970, Seneviratne was the Information Secretary of Dudley Senanayake, who was the Prime Minister of Sri Lanka at the time.
The last film in which he wrote the screenplay, Priyanga directed by Amaranath Jayathilake, was released in September 1970 after his death.
The two screenplays written by PKD Hith Nathi Mal and Kshema Bhoomiya have not been released yet.