His parentage is confirmed by the charter dated to [1050/60] under which "Hugo…castri Breietelli possessor in pago Cenomannensi" donated "ecclesiam…in Dunensi pago…Lazellam" to Marmoutier, with the permission of "domine mee Mahildis filie Galterii de Aloia filiorumque ac filiarum eiusdem, quibus patres fuere Guillelmus cognomento Gugetus et Gauffredus de Medana…Willelmi, Hildeburgis et Richildis, item Hamelini, Galterii et Hersendis". The Actus pontificum Cenomannis names "Gaufridus, filius Gaufridi de Meduana" when recording that he was in Apulia. The same source comments that "Gaufredi de Meduana" was "tutor et quasi maritus", implying that Gersende was his mistress.
Seigneur de Mayenne. "…Gualterii de Meduana" witnessed a charter dated to [1087/94] under which Robert son of William I King of England donated property to Holy Trinity, Caen. He participated in the First Crusade 1096/1098, although the primary source on which this is based has not yet been identified. "Walterii de Meduana…[et] uxor eius Adelina et filius eorum Hamelinus…alter filius Juhellus" consented to a donation by "Ruellonius de Gorron, filius Gaufredi" of the church of Brecé to Marmoutier, by charter dated to [1099/1124]. Henry II King of England confirmed the property of the abbey of Saint-Martin de Troarn, including donations by "…Walteri de Meduana et uxoris sue et filiorum suorum Hamelini et Juhelli…" of property "in ecclesia de Muscampis…de Burceio…et…de Troitemer…", by charter dated to [1155/57].
Married Adeline, daughter of ---.... According to Kerrebrouck, she was "de Baugency". In Europäische Stammtafeln, she is "de Presles". The basis for these suppositions is not known. "Juhellus Goualterii filius, dominus castelli Meduanæ…matre mea Adelina et sorore Felicia" organised the transfer of the monks of Saint-Martin to Mayenne castle, for the souls of "Gaufredi…avi mei et Gualterii patris mei…Hamelini fratris mei", by charter dated 1144, witnessed by "…Hugo de Lavalle…".
The necrology of Beaune names "Aelina" as mother of Mathilde, wife of Hugues II Duke of Burgundy. 1
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