Born 18 February 1925 in Galle, Professor Gunasinghe was a Sinhala poet, novelist, historian and an arts critic who filled a vital niche in the nation's literary and cultural growth.
Late Gunasinghe who learnt letters at the Sinhala school in his village run by a Bhikkhu and a bilingual school in Ruwanwella later entered Mahinda College, Galle for his secondary education. Prof. Winnie Vitharana, Prof. Sirimal Ranawella and Dharmasena Arampatta and Veteran Journalist Edwin Ariyadasa were his contemporaries at Mahinda College. In 1970, he moved residence to Canada and served as Arts and History Professor at the Victoria University.
‘Abinikmana’ and 'Rathu Kekula' are considered gems among the books authored by him.