Best known as the author of Aithihyamala, an eight-volume compilation of century-old legends about Kerala,[1] Sankunni's writings cover prose and poetry, including verses for Kathakali and Ottan Thullal.

Kottarathil Sankunni was born on March 23, 1855, at Kodimatha, in Kottayam district of the south Indian state of Kerala (erstwhile Travancore) to Vasudevan Unni-Nangayya couple.

[2] The boy, whose name at birth was Vasudevan but was called Thanku, Sanku and later Sankunni, did his early schooling under the tutelage of a local teacher and later, studied Sanskrit under Manarkattu Sanku Warrier and traditional medicine under Vayskara Aryan Narayanan Mooss.

He joined Malayala Manorama in 1890 as the editor of their poetry section during which time he tutored a few Britishers the language of Malayalam.

[5] Sankunni started compiling the legends of Kerala in 1909 and it took over a quarter to a century for him to complete the work.