A man and his son were arrested on the charge of torching articles in the house of one B. Priyadarshini in Tirumangalam due to enmity over a love marriage on Wednesday night. The police said Ms. Priyadarshini’s younger brother Aswathaman had fallen in love with Kavirajan’s daughter. He married her against the wishes of the girl’s family six months back and was living outside Tirumangalam.