In 1559, Schönrain came to Anton von Isenburg-Büdingen. When that family line failed in 1601, the site passed permanently to the Prince-Bishops of Würzburg, who used it as accommodation for their forestry officials until 1625. It was heavily damaged in the Thirty Years' War and served as a local source of construction materials. The Bishopric was secularised in 1803 and Schönrain later continued in use by the forestry officials of the Kingdom of Bavaria. When their headquarters was moved elsewhere in 1818, the buildings at Schönrain were stripped for building materials, and the site has been in ruins since that time.