"Ranimiro rex" donated property to Sahagún by charter dated 3 Apr 945, witnessed by "…Pelagio Gundesalviz…". "Ranimiro rex" donated property to Sahagún by charter dated 3 Apr 945, witnessed by "…Pelagius Gundisalviz…". "Pelagius Tetoniz, Pelagus Gundisaluiz, Aluitus Potenci, Quintila Argemundiz, Guntinus Gemundiz, Gundesindis, Iquilaniz, Spodenirus Vimaredi..." subscribed the charter dated 7 Aug 947 under which “Letimius presbiter” donated the church of Santa María de Paradela to Santiago de Compostela. “...Pelagio Gundesalviz...” confirmed the charter dated 15 May 951 under which King Ordoño III donated "villa de Matella" to Sahagún.
Conde. His parentage is confirmed by a charter dated to [956] which records the settlement of property disputes relating to “el territorio de Salnés” and names “domno Gundisalbus dux comite et…comitesa domna Tarasia…comite domno Pelagio prolis Gundisalbizi et illa regina domna Aragonta sororem suam…comitessa domna Elduara”. “...Pelagius Gundesalbiz...” confirmed the charter dated 5 May 956 under which King Ordoño III donated property to the monastery of San Martín de Fonte de Febro, “uilla nostro Peso” exchnged for “uilla...Lionia” with “Fortes Iustiz”. 1