[3] One could explain the inactivity of the Muslims with respect to the Kingdom of Asturias by the fact that Silo's reign coincided with the intervention of Charlemagne in Spain in 778.

Charlemagne could not maintain the siege of Zaragoza and had to retire by way of Roncesvalles, suffering a great defeat there,[4] and the subsequent campaign of Abd-al-Rahman I in 781 into the Ebro Valley in revenge against those who had been favorably disposed toward the French invasion.

In this contractual document of donation "pro anima" ("for the sake of the soul"), Silo granted particular properties in the village of Tabulata (now Trabada) in Lucis (Lugo) to a group of monks, with the intention that they would found a monastery.

[5] Upon ascending to the throne, Silo moved the capital from Cangas de Onís to Pravia, the region in which he was a local magnate, a landed aristocrat.

Silo was entombed in the Church of San Juan Apóstol y Evangelista, Santianes de Pravia, which he had ordered built.

[6] Nonetheless, the Maestro Custodio is said to have stated that Silo's remains were moved to the monastery of San Juan de las Dueñas in the city of Oviedo, and re-interred behind the main altar there.