Wikipedia
Aithihyamala or Ithihyamala (Garland of Legends) is a collection of century-old stories from Kerala that cover a vast spectrum of life, famous persons and events. It is a collection of legends numbering over a hundred, about magicians and yakshis, feudal rulers and conceited poets, kalari experts, practitioners of ayurveda and courtiers; elephants and their mahouts, tantric experts.
Kottarathil Sankunni (23 March 1855 - 22 July 1937), a Sanskrit-Malayalam scholar who was born in Kottayam in present day Kerala, started documenting these stories in 1909. They were published in the Malayalam literary magazine, the Bhashaposhini, and were collected in eight volumes and published in the early 20th century.
It includes popular tales such as about the twelve children of Vararuchi and Parayi (a woman of Paraiyar caste), Kayamkulam Kochunni, Kadamattathu Kathanar among many others. The story of 12 children is popularly known as Parayi petta panthirukulam.