Wikipedia
Adikal
Adikal is a sub-caste of Ambalavasi Nairs in Kodungallur, Kerala. Women in this caste are known as Adisyaar or as Adiyamma. In Travancore they are known as Adishens or Aadichan Nairs. Aadichans were counted as Nair until the Travancore Census of 1891. But from the census of 1901 onwards, they were counted as Chakkala Nair and Aadichan Nair, a separate category within the Nair super-group. They numbered 79 people during the 1901 Census.