"Rotrudes femina et filias meas…et Vuibertus et uxor mea Goudovara et Emmo" sold property "in comitatu Helenense in Valle-Asperi…alode…Costogia" to "Avane comitissa et filio tuo Holibano" by charter dated 1 Jun 936. “La condesa Ava y sus hijos Seniofredo, Wifredo, Oliba y Miron subdiacono” donated “alodio en Armancius que habia comprado el conde Miron” to Ripoll by charter dated 15 Apr 938. “Ava comitissa et filiis meis Seniofredus comes et Wifredus comes et Olibra comes et Miro levita” donated property to Cuxà, for the sins of “Mironi comitis genitori condam nostro”, by charter dated 1 Jul 941. "Seniofredo conde de Cerdaña y Besalú y su hermano Oliva conde" donated "el alodio de Aiguatebia" to "Isarno vizconde del Conflent" by charter dated 15 Oct 960.
He succeeded his brother in [965/67] as Comte de Cerdanya i Besalú. "Oliba…comes Bisuldun" granted concessions to the abbess of Saint-Jean by charter dated 966. "Oliba comes et marchio et uxor mea Ermengarda" donated property "in comitatu Ausona in valle Riopullensi" to Oliba abbey by charter dated 16 Aug 967. “Oliba...comes et uxor mea Ermengardis et Miro episcopus” donated “alodium...qui nobis advenit per præceptum Domini Regis de condam Vuifredo vicecomite quem vocaverunt Falchero” to Ripoll Santa Maria by charter dated 28 Jun 975. “Olibane...comes et domini Mironis episcopi [...sedis Urgellitanæ] fratris nostri” founded the monastery of Santa Maria de Serrateix “in comitatu Bergitano in loco...Serra de Taxo” by charter dated 7 Oct 977. “Miro…Gerundensis ecclesiæ…episcopus ac comes Bisuldunensis…cum fratribus nostro domno Olibano ac Seniofredo comitibus” founded the monastery “sancti Petri Bisuldunensis” to “ecclesiæ Bisuldunensi” by charter dated 24 Nov 977, although this document must be misdated if the date of death of Senifredo is correct...
He tried to subjugate the county of Rasès but was defeated in 981 by the Comte de Carcassonne-Rasès. "Oliba comes et coniux mea Ermengards" donated property to Sant Llorenç de Bagà by charter dated 15 Jan 981, subscribed by "Bernardus prolis, Wifredus prolis, Oliba prolis, Bernardus vicecomes Cerdaniense, Bernardus vicecomite Confluente". "Oliba…comes et Ermengardis comitissa" donated "alodum nostrum…in comitatu Bergintano in apendicio de Castro Vivario, qui fuit de Goldregoto" to Santa Maria de Serrateix by charter dated 1 Feb 988. "Oliba…comes et Ermengards comitissa" donated "alodum nostrum…in comitatu Rosselionensi…villam…Basone cum ecclesia Sancti Vincentii et Sancti Joannis" to the monastery of Cuixà by charter dated 14 Feb 988.
He abdicated in 988 and entered the Benedictine monastery at Montecasino. The Gesta Comitum Barcinonensium records the death in 990 of "Olibano Cabretæ". The Chronicon alterum Rivipullense records the death in 990 of “Olibanus Capreta comes”. A charter dated 988 records that "Bernardus comes cum filio suo Guilliermo et…Guifredus frater eius" were left under the protection of the Pope by "piæ memoriæ patre Oliba comite", which suggests that Oliba died shortly before this date. 1
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