 Nevertheless, it might already have been quite old, even by then.According to the record in which Offenbach had its first documentary mention, Archbishop Heinrich of Mainz (1142-1153) acknowledged that the "edelfrei" nobleman Reinfried had donated a plot of land to Saint Vincent’s Benedictine Abbey in Metz.The donated land lay near the village of Offenbach am Glan, and soon thereafter a new monastery was to spring up, an affiliated monastery of Saint Vincent’s consecrated to the Virgin Mary.