The Aymari Rivalli De Allobrogibus records that "Amedeo…secundo, Mauriennæ comiti" married "Guigona Crassi filia". The identity of her father is clarified as the passage also names "Humbertus minor Crassi filius" and his appointment ot "archiepiscopatum Viennensem". Europäische Stammtafeln shows a single marriage of Comte Amédée III, to Mathilde d'Albon, in 1123. It is more likely that Mathilde was his second wife, especially if her likely birth date range is correct. According to Europäische Stammtafeln, Mathilde's parents were married [1106-1110]. The same table shows that Mathilde's two brothers, Guigues and Humbert, were mentioned in 1110, indicating that the marriage must have taken place during the earlier part of this date range, if the range is correct. A third child, Gersende d'Albon, must also have [been] born during the early years of her parents' marriage as she herself gave birth to two sons before (or shortly after) the death of her husband in Oct 1129. Assuming all these dates are correct, the timescale is tight for the birth of a fourth child, Mathilde, before 1112 at the earliest. This would make it impossible for Mathilde to have been the mother of Comte Amédée's oldest daughter Alix.
"A. comes et marchio cum uxore sua M." donated property to the monastery of Ripalta, with the support of "eorum filio Umberto", by charter dated 9 Jan 1137. "Amedeus comes et marchio et Maies comitissa uxor eius et Umbertus eorum filius" donated property to the monastery of Saint-Maurice by charter dated 30 Mar 1143. "Amedeus comes et marchio" confirmed donations to Saint-Sulpice en Bugey, for the soul of "filii mei Humberti", by charter dated to , which also names "uxore mea Matildi", confirmed by "Aalasia comitissa de Bello Joco…cum filio meo Guichardo". "Amedeus comes et marchio et Majes comitissa uxor eius et Umbertus eorum filius" confirmed the rights of the monastery of Saint-Maurice d’Agaune by charter dated 30 Mar 1148. 1