 In 817, the village had its first documentary mention as "Lisura".According to documents from 1085 and 1165, a great part of the land in Lieser belonged “together with the church and its tithes, vineyards and cropfields…” to the Abbey of Saint-Hubert, which was subordinate to the Prince-Bishopric of Liège (nowadays in Belgium).Alongside this, the Prince-Archbishop-Elector of Trier also had landholdings in Lieser about 1200.