A charter dated 19 Jul 1126 records the restitution by "Joannes filius Goffridi Vindocinensis comitis" of property to La Trinité de Vendôme. "Goffridus comes Vindocinensis dictus Grisagonella" confirmed the possessions of La Trinité de Vendôme, for the soul of "uxoris mee Mahildis" and with the consent of "duo filii mei Johannis et Goffredus", by charter dated to [1102/29]. A fragmentary chronicle of the dukes of Aquitaine names "Johanni Comiti primogenito Galfridi Grisagonellæ Comitis Vindonicensis atque Mahaudæ Castridunensis" when recording his first marriage. "Goffridus Grisagonella comes Vindocini et Johannes filius eius" donated part of the forest of Gâtineau to the abbey of La Trinité de Vendôme by charter dated 1139, which states that Geoffroy had recently returned from Jerusalem, later consented to by "Lancelinus filius Johannis comitis Vindocini, Mathildis filia eiusdem Johannis, item alia filia Mathildis" and witnessed by "domnus Lancelinus de Baugenciaco…Goffridus de Chaorciis…".
Comte de Vendôme. "Joannes Vindocinensis comes" part of the forest of Gâtines to the abbey of La Trinité de Vendôme, with the consent of "duo filii mei Burchardus primogenitus et Lancelinus…Agatha uxor Burchardi filii mei", by charter dated 1147. The Chronicon Vindocinense records that "Joannis comitis" was excommunicated in 1177.
"Burchardus comes Vindocinensis" approved the donation of "bonæ memoriæ Johannes pater meus comes Vindocinensis" to the abbey of la Charité-sur-Loire by charter dated to [1185], witnessed by "Gaufridus frater noster, Johannes de Laval consanguineus noster, Matheus de Bellomonte". 2
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