The mountainous area of Asturias, isolated from the rest of the Iberian Peninsula, would have remained a backwater were it not for a singular event that transformed it into the most significant area of Spain: After the Moorish invasion of A.D. 711, Asturias offered a resistance only rivaled by that which they previously offered the Romans. The Moors overran the region as they had done in the rest of Iberia, except for the single, small stronghold of La Peña in the Cantabrian Mountains, perhaps the last portion of the peninsula which remained in Christian hands. After an intense but unsuccessful three year siege, the Moors, anxious to wrap up the situation, threw themselves into an attack at Covadonga, where they were defeated. The few defenders of La Peña thus became the nucleus of the Spanish Reconquista, which after more than 700 years of war eventually saw the Moors thrown out of what are now Spain and Portugal. Those few defenders (four of which belonged to the Ron family), by a strange fate of war thus sired most of the noble houses of Spain.

By 1492, when the last remaining Moorish stronghold at Granada fell, the opportunities of gain by war offered to the cadet branches of these old, originally Asturian lines dried out. Proud of an ancient name but poor of means, these descendants of the defenders of La Peña jumped at the opportunity offered by the fateful discovery on that same year of a new continent by Christopher Columbus. In less than three decades they acquired by conquest most of the Spanish possessions abroad, making Spain the empire of largest territorial extent that had existed until that time.

....It was during this episode that the deep differences between the Gothic and Hispanic races disappeared. Both groups melted together into the denomination of Christians, fighting from then on under a single flag. The victorious Noblemen, now owners by way of conquest of the land, began to call themselves Señores (Lords) and to exercise the rights as such in their numerous landholdings (solariegos) and in others newly carved for the Goth Noblemen who had lost their land and palaces [elsewhere in Spain]. These Noblemen originated the new lineages of the Spanish Nobility, which together with the new Hispano-Roman strain constitute the most distinguished, powerful, and Ancestral Houses (casas solariegas) that grace the history of Spain from those times, reconquering the fatherland inch-by-inch and copiously showering it with their blood.

Notice the last entry in Visigoth timeline:

711 - 714 The kingdom is overrun by the Moorish Islamic invasion of
the Omayyads
, at the battles of Jerez de la Frontera and Ecija. Cordova is captured (711), as is Seville and Toledo (712). The battle of Segoyuela sees Saragossa captured (713), and Valencia falls (714). The small Asturian
kingdom is founded in the unconquered and mountainous northwest soon after
(718).

This is probably when Fortun (the Visigoth) went up to the area near Solorzano (and you didn't even know you had some German origins do you?):

"El origen de los SOLORZANO se remonta al año 713 d.C, cuando los visigodos comandados por el Rey Don Rodrigo, pierden la batalla contra los moros cerca de Toledo.

Uno de sus Capitanes llamado Fortún, huye con parte del ejército visigodo hacia Cantabria y se establece cerca de Santander en un valle llamado la Hoz de Anero.

Con el tiempo se convirtió en Fortún de la Hoz. Por eso todos los diferentes escudos de la familia SOLORZANO siempre llevan en alguna parte una hoz recordando su antiguo origen.

Martín Antonínez de la Hoz casado con Doña Goda Galíndez de Gordejuela descendiente directo de Fortún, se muda al valle de SOLORZANO que significa lugar montañoso, en el siglo IX, por eso los SOLORZANO fueron conocidos como señores de la Montaña en la antigüedad.

Su hijo Martín el primero en usar el SOLORZANO, haciéndose llamar Martín Martínez de SOLORZANO, usándolo de aquí en adelante todos sus descendientes."