It is a belief that a king Thopran gave dowry as land for his three daughters Thankamany, Kamashi, and Neeli.

Thankamany town is located in a valley of three small hills Thamprankunnu, Kattadikavala and Kurishupara respectively.

Almost 90% of people are Roman Catholic Syrian Christian (R.C.S.C), most of them are migrated from Pala (in Kottayam district) before two generation or less than that.

Being a Christian majority area, the St. Thomas Forane church situated at the heart of Thankamany town.

The 2024 Malayalam movie Thankamani is based on the real life incident of police brutality happened in this place on 1986