[1] She was married to Count Lothair of Meer (now Meerbusch), in the modern region of North Rhine-Westphalia, Germany.
At the age of twelve, her son Hermann Joseph was sent to the Premonstratensians (Norbertine) at Steinfeld Abbey, who sent him to the Netherlands to study.
[2] In 1958 Pope Pius XII formally recognized his cultus, and Hermann Joseph von Steinfeld is regarded as a saint.
With the death of her husband, Hildegund made a pilgrimage to Rome, accompanied by her daughter, Hedwig.
[3] She converted her castle into a monastery, serving as its first abbess[4] She should not be confused with another Hildegund of the same era, who lived her life disguised as a man, and was considered by some as a saint.