http://en.wikipedia.org/wiki/Edgiva_of_Kent

Edgiva of Kent, or also Eadgifu was the third wife of Edward the Elder, King of England. Edgiva was the daughter of Sigehelm, Ealdorman of Kent. She became the mother of two sons, Edmund, later King Edmund I, and Edred, later King Edred, and two daughters, Saint Edburga of Winchester and Edgiva. Edgiva survived Edward by many years, dying in the reign of her grandson Edgar.

https://en.wikipedia.org/wiki/Ecgwynn

Ecgwynn or Ecgwynna , was the first consort of Edward the Elder, later King of the English , by whom she bore the future King Æthelstan , and a daughter who married Sihtric Cáech, Norse king of Dublin, Ireland and Northumbria. Extremely little is known about her background and life. Not even her name is given in any sources until after the Norman Conquest. The first to record it is William of Malmesbury, who presents it in Latinised guise as Egwinna and who is in fact the principal source for her existence