Illustrious Highness
In 1701, Melchior's son, Rudolf Franz (1677–1754), married Eleonore von Hatzfeld, widow of the Count von Dernbach, who had left her the "Herrschaft" Wiesentheid in Franconia, a small imperial state raised to a county in 1701. Thus, the family obtained imperial immediacy for the first time, and since the counts of Schönborn bear the prefix Illustrious Highness. She had also inherited the Austrian fiefs of Arnfels and Waldenstein in Carinthia from her first husband. Melchior then bought some further estates in Austria in 1710, Göllersdorf with Mühlberg and Aspersdorf in Lower Austria, from the Counts of Buchheim. In 1717, his estate was partitioned into the states of Schönborn-Wiesentheid and Schönborn-Heusenstamm, both retaining immediacy. Heusenstamm was inherited by Schönborn-Wiesentheid in 1801. The state of Schönborn-Wiesentheid was mediatised in 1806.