BOSON, son of ROTBALD [I] & his wife --- (-after Oct [965/67]). "Bosoni comitis, filii Rothboldi quondam" restored property to Saint-Victor by charter dated Mar 965[202]. Comte [d'Arles]. "Boso comes et uxor sua Constantia…illorum filii…Willelmus comes, Rotbaldus comes, Pontius juvenis" signed the charter dated May [963] under which "Gencius et uxor mea Aiburga" donated property "in pago Aquense superiore ad castrum…Ansoyse" to Monmajour, for the souls of "seniore meo Bosone et uxor sua quondam"[203]. "Boso comes" donated property "villam…Agello…ultra fluvium Durentia" acquired by his father to "ecclesiam sancte Marie et sancti Stephani Avinionensis", dated Oct [965/67] at Avignon but referred to only in a copy dated 24 Nov 1209[204].
m CONSTANTIA, daughter of --- (-after May [963]). "Boso comes et uxor sua Constantia…illorum filii…Willelmus comes, Rotbaldus comes, Pontius juvenis" signed the charter dated May [963] under which "Gencius et uxor mea Aiburga" donated property "in pago Aquense superiore ad castrum…Ansoyse" to Monmajour[205]. Her affiliation is unknown. Chaume[206] proposed that she was Constantia, daughter of Charles Constantin Comte de Vienne, for onomastic reasons only on the basis that names with the root "Constant-" were unknown in western royal genealogy before Charles Constantin himself. This supposition is, however, incorrect as numerous charters of the monastery of Cluny dated between 891 and 946 include the name "Constantia"[207], and many others during the same period the names "Constantius" and "Constantinus". Poly[208] suggests that Constantia, wife of Count Boson II, was the sister rather than daughter of Charles Constantin, but this appears to be more difficult to sustain chronologically.