Elle est mariée avec Rudolf I de Coucy.
Ils se sont mariés.
Enfant(s):
ALIX de Dreux ([1156]-after Feb 1217). The Chronicle of Alberic de Trois-Fontaines names "matrem Engelranni de Coci Petronillam" as one of the two daughters of "comes Robertus" & his second wife[46]. "Radulfus dominus Cociaci…assensu Aelidis uxoris meæ" donated property to "Roberto de Attrio" by charter dated 1187, witnessed by "Radulfus clericus nepos meus, Margareta de Firmitate neptis mea…"[47]. "Radulfus dominus Cochiaci" donated property to Mont Saint-Martin, with the consent of "uxore mea Adelide et liberis meis Ingelranno, Thoma, Radulph, Roberto", by charter dated 1187[48]. She governed Coucy after the death of her husband. m (after 1173) as his second wife, RAOUL [I] de Coucy Seigneur de Coucy et de Marle, son of ENGUERRAND [II] Seigneur de Coucy & his wife Agnes de Boisgency (after 1142-killed siege of Acre Nov 1191, bur Abbaye de Foigny). He was one of the advisers of Philippe II King of France.
https://fmg.ac/Projects/MedLands/pardreman.htm#AlixAdeleDreuxdied1217