Ascaric was either the Bishop of Astorga or the Archbishop of Braga. He was condemned in the third letter letter of Pope Hadrian I for adoptionism

Adoptionism

Adoptionism, sometimes called dynamic monarchianism, is a minority Christian belief that Jesus was adopted as God's son at his baptism...

 sometime between 785 and 791 (probably 786). His Epistula ad Tuseredum ("letter to Tuseredo"), explaining the resurrection of the body, places him in the Kingdom of Asturias

Kingdom of Asturias

The Kingdom of Asturias was a Kingdom in the Iberian peninsula founded in 718 by Visigothic nobles under the leadership of Pelagius of Asturias. It was the first Christian political entity established following the collapse of the Visigothic kingdom after Islamic conquest of Hispania...

 at the time. He also penned a poem to Tuseredo, modelling it on the Hamartigenia of Prudentius

Prudentius

Aurelius Prudentius Clemens was a Roman Christian poet, born in the Roman province of Tarraconensis in 348. He probably died in Spain, as well, some time after 405, possibly around 413...

 and the verse of Coelius Sedulius

Coelius Sedulius

Coelius Sedulius, was a Christian poet of the first half of the 5th century. He is termed a presbyter by Isidore of Seville and in the Gelasian decree....

.