By a charter dated 30 October 1130, his last known public act, Gutierre made a donation of the monastery of San Salvador de Villafrío to the Cathedral of Saint Mary in Lugo, then under construction under the master builder Raimundo de Monforte.
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Gutierre Vermúdez (or Gutier Bermúdez) (died 1130) was a nobleman of the Kingdom of León, with interests primarily in Galicia, mainly in the northeast, around Lugo.
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According to the Historia compostellana, Alfonso charged a certain "Count G" and the prelate Diego Gelmírez per litteras suas (i.e. in writing) with putting it down.