Paap was born in 1729. Paap's father was Toots and his mother was Epp. His paternal grandfather was Peeter and his paternal grandmother is <Unknown>; his maternal grandparents were Peeter and Eva. He had three brothers and five sisters, named Toomas, Peep, Mikk, Katri, Kärt, Annika, Mai and Katri. He had a half-brother and five half-sisters, named Tõnn, Liis, Tiiu, Mai, Kärt and Ann.