don DIEGO Laínez (-[1058]). The Historia Roderici names Diego Laínez as son of "Laín Nuñez"[551]. The "Corónicas" Navarras name "Iac Layniç" as the son of "Layn Nuniç"[552]. The Nobiliario of Pedro Conde de Barcelos names "D. Diego Lainez, D. Fernando Lainez" as the children of "Lain Nuñez"[553]. He subscribed a grant by his wife's uncle, Nuño Álvarez in 1047[554]. He captured the castles of Ubierna, Urbel and La Piedra from Navarre, probably after 1054[555]. m doña TERESA Rodríguez, daughter of don RODRIGO Álvarez & his wife doña Teresa Núñez. The "Corónicas" Navarras records that "Díac Layniç" married "fija de Roy Díaz Álvariz d'Esturias"[556]. The Historia Roderici records that the mother of Rodrigo Díaz el Campeador was "the daughter of Rodrigo Álvarez…"[557]. The Nobiliario of Pedro Conde de Barcelos records that "D. Diego Lainez" married "D. Teresa Nuñez"[558]. Diego & his wife had one child