His absence from his supposed father´s charter dated 940 indicates that Fernando must not have been born then, or have been an infant considered too young to be named. Fernando Díaz confirmed documents relating to the monastery of Sahagún 11 May 976, 16 Jun 977 and 1 Sep 986, the last being the donation of his supposed brother Osorio Díaz, and the other two also being confirmed by his supposed brothers Gómez and Osorio Díaz. "Gunterodo Dea dicata, Fredenando Didaci, Garsea Gomize, Velasco Gomize, Sanzo Gomez, Monnio Gomez, Fafila Fredenandiz, Osorio Fre[de]nandiz…" subscribed the charter dated 1 Sep 986 under which Osorio Díaz donated "villa de Arcello" to Sahagún. “Fredenando Didazi, Petro Fredenandiz, Nepzano Didaz, Gomiz Fredenandiz, Froeila Didadidaz, Garsea Purizellize” confirmed the charter dated 24 Nov 973 under which Ramiro III King of León donated property to the monastery of San Cipriano [de Valdesaz]. “...Gomiz Didaci...Fredinandus Didaci...Nunus Didaci, Nepzanus Didaci, Froila Didaz...” confirmed the charter dated 21 Jul 974 under which King Ramiro III donated the monastery of Santos Justo y Pastor de Rozuela to Ariendo monastery, previously granted to “condam Sendino presbitero, Puricelly pigno qui hunc pontifice tum sedis huius tenens compto”. “Fredenando Didazi, Petro Fredenandiz, Nepzano Didaz, Gomiz Fredenandiz, Froeila Didadidaz, Garsea Purizellize” confirmed the charter dated 24 Nov 978 under which King Ramiro III donated “uilla de Sancti Uictori” to the monastery of San Cipriano de Valdesaz. 1
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