This probably comes from the old Episcopal Barcelona.

The Visigoths were the western branches of the nomadic tribes of Germanic peoples referred to collectively as the Goths. These tribes flourished and spread during the late Roman Empire in Late Antiquity, or the Migration Period. The Visigoths emerged from earlier Gothic groups (possibly the Thervingi) who had invaded the Roman Empire beginning in 376 and had defeated the Romans at the Battle of Adrianople in 378. Relations between the Romans and the Visigoths were variable, alternately warring with one another and making treaties when convenient. The Visigoths invaded Italy under Alaric I and sacked Rome in 410. After the Visigoths sacked Rome, they began settling down, first in southern Gaul and eventually in Spain and Portugal, where they founded the Visigothic Kingdom. 

The Visigoths entered Hispania (modern Spain and Portugal) in 415, and they rose to be the dominant people there until the Moorish invasion of 711 brought their kingdom to an end.

This period in Iberian art is dominated by their style. Visigothic art is generally considered in the English-speaking world to be a strain of Migration art, while the Portuguese and Spanish-speaking worlds generally classify it as Pre-Romanesque.

Branches of Visigothic art include their architecture, their crafts (especially jewellery), and even their script.