Gonzalo Núñez de Lara

The filiation proposed by Luis de Salazar y Castro in his work on the House of Lara, has been accepted for centuries although several modern historians question its accuracy.

Nuño Álvarez, who died in 1065, was the tenente in Amaya and Carazo[9] and his family owned properties in the land between the Arlanzón and the Duero rivers, which would explain the "power of the Lara in the region".

[10] The historian Julia Montenegro in her study on the Monastery of Santa María la Real de Piasca documented a relationship with the lineage of the Alfonsos,[4] the origin of the Osorios, Villalobos, and Froilaz.

[4][11] The medievalist scholar and professor Margarita Torres Sevilla-Quiñones de León agrees that there was in fact a relationship with the Alfonsos, nevertheless, she proves that María Gutiérrez and Nuño Álvarez were not Gonzalo's parents, but rather those of his wife Goto Núñez,[12][13] as evidenced in a donation made in 1087 by Gonzalo, his wife Goto, and his sister-in-law Urraca to the Monastery of San Martín de Marmellar.

[8] A year later, the same Urraca mentioned in the previous charter made a donation to the same monastery of some properties that had belonged to her uncle Munio Álvarez and her mother María, daughter of Count Gutierre Alfonso.

[18] Both brothers were vassals of king Sancho III of Navarre[19] and Munio appears often in charters with his nephews Gonzalo and Álvaro Salvadórez.

[20] The only filiation that seems to have been proven is that of Gonzalo's wife, Goto Núñez, as a member of the Alfonso and the Álvarez clans and that even though "there seems to be close ties between the Lara and the Salvadórez [...], documentary proof is still lacking in order to be able to determine the precise ancestry".

[13] In 1093, he participated in a military campaign in Portugal and later in Huesca trying unsuccessfully to prevent the Almorávides from conquering the city[23] In 1098 he played a key role in the repopulation of Almazán and Medinaceli after being reconquered in 1104 and also in Andaluz, the latter probably held as part of his properties.