"Mummadonna…cum filios meos Gunsaluus Didacus Ranimirus diaconus Onecha a deo uota Donnus nunus et Arriane" distributed property of "viro meo diue memorie Domno Ermigildo" by charter dated 5 Aug 950. "Adosinda prolix Guttier et Ilduare" granted "villas…Moraria et Castineira" to "Gunsalbo Menendiz et uxor tue Ilduare", naming "viro meo dive memorie Ranimirus Menendi", by charter dated 17 Oct 964, subscribed by "Didacus Menendi, Arias Menendi…".
Conde. The Cronica de Sampiro, as reproduced in the Historia Silense, records that "Gundissalvus…dux…ultra flumen Dorii" poisoned Sancho I King of León who was trying to exact tribute, dated to Dec 966. His relations with Ramiro III King of León broke down over the latter's inaction in the face of the Viking attacks on Galicia in 968. "Gundisalbus filii Ermegildi et Mummadomne" donated property "in ripa Arrogio…", held by "frater meus Ranemirus et eius uxor Adosinde", to Vimeiro by charter dated 10 Dec 968. He was also the sworn enemy of dux Rodrigo Velásquez, with whom he was in conflict from 970 to 974 and whom he defeated at the battle of Aguioncha. "Gundissalus Menendiz" donated property from "domna Palla" by charter dated 22 Dec 981, subscribed by "…Menendo Gundisaluiz…". A charter of Vermudo II King of León dated 12 Apr 993 records the rebellion of "Gundisalvo Menendici…[et] filium ipsius Gundisalvi…Rudesindum".
Governor of the county of Braga 994, he was killed during al-Mansur's campaign against Santiago de Compostela. 1
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