The "Corónicas" Navarras name "Rodric Bermúndiz" as the son of "Bermunt Layniz". The Historia Roderici names “Rodrigo Bermúdez” as the son of “Bermudo Laínez”. The Nobiliario of Pedro Conde de Barcelos names "D. Rodrigo Vermuiz, D. Elvira Vermuiz, de que vienen los de Biscaya" as the children of "Vermui Lainez".
“...Ruderico Vermudiz...” subscribed the charter dated 1 Oct 1047 under which Fernando I King of Castile confirmed properties to the bishop of León. "...Ruderico Bermudiz…" subscribed the charter dated 15 May 1050 under which “Gomessanus...episcopus...cum nepotes meos Simeoni et Gomessano” donated property to San Pedro de Cardeña. "…Roderico Bermudez…" subscribed the charter dated 18 Feb 1053 under which Ferdinand I King of Castile confirmed the union of the monasteries of Población and Tamara. “...Roderico Vermudiz...” confirmed the charter dated 1 Sep 1058 which records that "cometissa domna Momadomna...cum filio meo Petro" donated “in Ualle Rodias...in Cisnarios” to Santa María de Piasca. “Roderico Uermuiz...” confirmed the charter dated 21 Nov 1058 under which King Fernando I granted "villas...Planctata et iacet in ripa riuulo Pisorga et illa alia...Respeidena" to “filios et filias de Gudesteo Didaz...”. "Cometissa domna Onneca, Gomiz Fredenandiz prolis" donated property “in territorio…Borueva in villa…Ecclesiasindenia” to the monastery of San Millán de la Cogolla by charter dated 10 Nov 1062, confirmed by “…sennor Nunno Alvarez, sennor Roderico Bermudez, sennor Sarracino Hanniz, sennor Didaco Alvarez, sennor Hanni Hanniz, sennor Ordoni Ordoniz, sennor Fredinando Rodriz, sennor Alvaro Rodriz, sennor Eximino Lopiz, sennor Salvator Gondissalviz, sennor Galindo Belasquiz”.
The name of Rodrigo's wife is not known. 1
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