Tõnn was born in 1747. Tõnn's father was Toots and his mother was Liis. His paternal grandfather was Peeter and his paternal grandmother is <Unknown>; his maternal grandparents were Jaan and Els. He had five sisters named Liis, Tiiu, Mai, Kärt and Ann. He had four half-brothers and five half-sisters, named Toomas, Paap, Peep, Mikk, Katri, Kärt, Annika, Mai and Katri.