Background
Eric was the son of Count John II and his wife Helen, a daughter of Duke Eric I of Saxe-Lauenburg.
Eric was the son of Count John II and his wife Helen, a daughter of Duke Eric I of Saxe-Lauenburg.
He was the ruling Count of Upper Hoya from 1377 until his death. Eric inherited Upper Hoya in 1377. He expanded the county to the south, at the expense of the Bishopric of Minden.
In 1383, he built a castle at Diepenau.
Bishop Wittekind II of Minden destroyed this castle a short time later. He also destroyed the village of Uchte and its castle.
Eric retaliated by destroying Fischer, a suburb of Minden. He reconquered Diepenau and Uchte and rebuilt the castles.
He expanded the county further by purchasing manors.