Richeldis is a rare feminine given name occasionally given in reference to Richeldis de Faverches, a Saxon noblewoman who supposedly had a vision of the Virgin Mary that led her to establish a Marian shrine in 1061 in Walsingham, England in honor of Our Lady of Walsingham.
The name Richeldis may be Old English or Norman in origin. One account claimed she was named in honor of Richardis, an Empress and ninth century saint.
Richilde and its variants was the name of several other medieval noblewomen. Other similar names in use at the time included Richelde, Richilda, Richilde, Richildis and Rychelde.
References
Richeldis Wikipedia(Text) CC BY-SA