Adelise de Tosny
- Born: Tosni, Louviers, Eure, Normandy, France
- Married: Before 1046
- Died: 6 Oct 1070
- Buried: Abbey of Lire, Anjou, France
 Research Notes:
Guillaume of Jumièges records that “Willelmus...filius Osberni, propinquus ducis Willelmi” founded “duo monasteriain honorem...Mariæ unum apud Liram...alterum apud Cormelias”, adding that he buried “Adelinam filiam Rogerii de Toenio uxorem suam” at Lyre. There is no indication whether Roger [I] or Roger [II] de Tosny was the father of Adelise, or of the identity of her mother. "Willelmo filio Osberni et…Ælicia eius uxore filia Rogeri de Thoneio" founded the abbey of Lyre by charter dated 1046.
Robert of Torigny's De Immutatione Ordinis Monachorum records that "Willermus filius Osberni Normanniæ dapifer et cognatus Willermi ducis…Aelizam uxorem suam filiam Rogeri de Toeneio" was buried in the monastery of Lyre. The necrology of Lyre monastery records the death "6 Oct" of "Adeliz uxor Willelmi hujus loci fundatoris". The necrology of the monastery of Ouche records the death "6 Oct" of "mater Willelmi Britolii Adeliza". 1
Marriage Information:
Adelise married Guillaume (William) fitz Osbern, 1st Earl of Hereford, son of Osbern de Crépon, Steward of Normandy, and Emma d' Ivry, before 1046. (William fitz Osbern died on 20 Feb 1070/1 in the Battle of Cassel, Flanders and was buried in Abbey of Cormeilles, Normandy, France.)
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