|Ermentrude and Charles|
Ermentrude's father was Odo, the Count of Orléans, who at one time was exiled by Lothair I (795 - 855), Charles the Bald's half-brother. Lothair did not want his half-brother Charles to inherit anything from the family territories and thereby reduce his and his full brothers' realms. Since Lothair had grudges against both Odo and Charles, a match between the two families probably did not sit well with him.
Little is known of Ermentrude, although she apparently was good at embroidery. Charles gave her Chelles Abbey. Having a religious institution in her possession came in handy when she left Charles in 866 after he executed her brother William (for rebellion).
Ermentrude died 6 October 869, and was buried in St.-Denis. Eight years later...
Charles died on 6 October 877.