“Fredinando Assuriz et uxor mea Momadonna et filio nostro Assur Fernandiz” donated “serna in locum...Riuo de Uena iusta ecclesie Sancte Eolalie” to San Pedro de Cardeña by charter dated 4 Mar 921, witnessed by “Assur, Obeco Nuniz, Tello...”. He confirmed the 28 Jan 929 donation of Conde Fernando González and his mother to the monastery of Santa María de Lara. “Assur Fredinandiz comes et uxor mea Guntroda cum filiis nostris” donated “fontem...Aderata in termino de Sacramenia” to San Pedro de Cardeñas by charter dated 26 Dec 943, witnessed by “Fredinando Assuriz, Obeco Assuriz, Munio Assuriz, Osorio Munnioz...Guttier Assuriz, Gundisalbo Assuriz...”.
Conde en Castilla: the dating clause of a charter dated 23 Aug 944, under which Ramiro II King of León donated “terra qui condam extitit pumare de comite” to San Pedro de Cardeñas, records “...comite Assur Fernandiz in Castella”. "Comite Assuri Fredenandiz…in Castella" donated property to San Salvador de Oña by charter dated 22 Nov 944, although presumably this is a later fabrication as the monastery was only founded in the early 11th century. "Ranimirus rex" donated property to Sahagún by charter dated 29 Mar 945, subscribed by "…Assur Fernandiz, Aurelius Baroncelli". "Ranimiro rex" donated property to Sahagún by charter dated 3 Apr 945, witnessed by "…Assuri Fredenandiz…". “...Ansur Fredenandiz, Fredenando Gontesalviz...” confirmed the charter dated 24 Sep 946 under which King Ramiro II donated "villa...Perales et Volpiare et Villa Rezmiro secundum obtinuit illas Gundisalbo Moniz" to Vega. 1
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