Thingalur is a place that is closely associated with the life and times of a Shiva devotee of rarest of the rare nature named Appudhi Adigal. Adigal is a suffix used in the names of renowned religious leaders and ascetics. Appudhi Adigal belongs to this category of leaders as a role model teaching the greatness of Guru. He did not perform penance. He did not worship even Lord Shiva. He had in his mind only the great Shiva devotee Sage Tirunavukkarasar. For him everything was Tirunavukkarasar alone. He named his eldest son Senior Tinavukkarasu, younger son Junior Tirunavukkarasau and every charity institution he established was named after the sage. In his decisive opinion, serving a devotee means serving God, a truth approved by God Himself.