“Pedro González” was Alférez of Alfonso VI King of Castile [1089 to 1091], and 30 Sep 1107 to 10 Sep 1109, although it is assumed that the former citations refer to a different person assuming that Pedro's birth date is correctly estimated as shown here. Named armiger regis by the king in 1098 and 1108. Tenente of Lara from 1107 to 1129, of Peñafiel in 1113. Queen Urraca donated property to León Santa María by charter dated 22 Jul 1109, subscribed by "Petrus Ansuriz Carrionensium comes, Gumez Gunzaluiz Castellanorum comes, Rudericus Munioni Asturensium comes, Froila Didaci Legionensium comes, Petrus Froilaz Gallecie comes, Suarius Ueremudiz consul Gallecie, Aluarus Fanniz Toletule dux, Munio Guterriz maiordomus palacii, Petrus Gunzaluiz armiger regis, Fernandus Gunzaluiz, Adefonsus Telliz, Tellus Telliz, Fernandus Telliz".
Conde 1110. The dating clause of a charter dated 1110, under which Alfonso I King of Aragon donated property to Valvanera, records “...comes Petrus, Laram et Medinam...”. "Urraca…tocius Ispanie regina" confirmed rights of the monastery of San Millán de la Cogolla by charter dated Aug 1110, confirmed by "…Petrus Gonzalvez comes de Metina…". “...Petrus Gundisalui comes...” confirmed the charter dated 29 Jul 1118 under which Queen Urraca donated Sobrado “inter Montem Rosum et terram de Speluca”, which King Fernando I had granted to “avo vestro Sigeredo Aluiti et...uxore sue Adosinda Arie”, to “Vermudo Petri et fratri vestro Fernando Petri”. "Urracha…Ispanie regina, regis Aldefonsi regineque Constantie filia" donated property to the abbey of Silos by charter dated 26 Mar 1119, confirmed by "…Petrus Gonsalvi comes, Rodericus Gonsalvi…". The dating clause of a charter dated 1125, under which "Maior Ruderici comitissa comitis Ruderici et comitisse Tharasie filia" donated half of the monastery of Santa María de Feleyta and other churches to Sahagún monastery, records “...Comite Domno P. in Lara et in Castella...”. "Petrus Larensis comes" donated property to the abbey of Silos, with the advice of "domine mee Urrache regine", by charter dated 2 Sep 1125, confirmed by "Rodericus comes frater comitis Petri, Fernandus Garciez maior, Fernandus Garciez minor, Garcia Enneget nepos comitis Petri…Petro Lopet de Montfort, Petro Gonçalvet de Munio…".
After the death of Queen Urraca in 1126, he allied himself with Alfonso I King of Aragon. The Chronica Adefonsi Imperatoris names "the Castilians Count Pedro de Lara and his brother Count Rodrigo González" as leaders of the opponents of Alfonso VII King of Castile on his accession in 1126. He reluctantly submitted to the authority of Alfonso VII King of Castile, but was later banished. The Chronica Adefonsi Imperatoris records that Alfonso VII King of Castile captured "Count Pedro de Lara and his son-in-law Count Bertran" at Palencia and imprisoned them at León until they surrendered all their castles. The same source records that Pedro left for Bayonne to join the king of Aragon, where he challenged Alphonse Jourdain Comte de Toulouse to a duel, broke his arm after falling from his horse, and died a few days later. 1
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