The Genealogiæ Scriptoris Fusniacensis names "Burgardum et Godefridum et sorores eorum" as childen of "Guidonem [de Guisia]". "Wido Lescheriensis…et Guisiensis" granted rights to the abbey of Saint-André du Câteau, for the souls of "meæ et coniugis meæ Adeluyæ", by undated charter, signed by "filiorum meorum Adam et Burgardi…" and later confirmed by the bishop of Laon by charter dated 1121 at the request of "Guido de Gusia rogatu uxoris suæ Adeluyæ et matris suæ Adæ" and with the consent of "filiis suis Adam et Burchardo".
Seigneur de Guise. A charter dated 2 Mar 1133 confirms the donation of “castelli...Lescherii” donated to Laon Saint-Vincent by “Balduinus de Subpeio”, with the consent of “uxore sua Machania privignoque et eodem genero suo Burchardo de Gusia cum uxore sua Adelidi ipsius...Baldewini filia”. The Breve Chronicon Buciliensis records that “Burchardus dominus de Guisia” granted rights to Bucilly, with the consent of “conjugis suæ Ælidis et Godefridi fratris sui”, in 1155. 1
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