Beatus of Liébana was an eighth-century monk, theologian, and writer residing in the Kingdom of Asturias. Living in the monastery of Santo Toribio de Liébana, he likely belonged to the group of monastic refugees who fled north following the Muslim conquest of the Iberian Peninsula. He is widely recognized for his scholarly work, specifically his extensive commentary on the biblical Book of Revelation. Beyond his writings, he was a prominent figure in theological disputes, notably opposing the adoptionist views held by certain Spanish clergy.