When Gilbert was killed in 939, Reginar had to pledge fealty to King Otto the Great.
[1] Otto appointed Conrad the Red as duke of Lotharingia, who tried to diminish the power of Reginar.
In an anarchic situation, Reginar appropriated the dowry of Gerberga of Saxony, Otto's sister and mother of the French king, and also church property.
In 957, Bruno, Archbishop of Cologne, who had also been appointed duke of Lotharingia, restored order and defeated Reginar.
He fathered two sons: This biographical article of a European noble is a stub.