The Escorial Beatus is a 10th century illuminated manuscript

Illuminated manuscript

An illuminated manuscript is a manuscript in which the text is supplemented by the addition of decoration, such as decorated initials, borders and miniature illustrations...

 of the Commentary on the Apocalypse by Beatus of Liébana

Beatus of Liébana

Saint Beatus of Liébana was a monk, theologian and geographer from the Kingdom of Asturias, in modern northern Spain, who worked and lived in the Picos de Europa mountains of the region of Liébana, in what is now Cantabria and his feast day is February 19.-Biography:He created an important...

. The illuminations of the manuscript show similarities in style to those produced Florentius, the artist responsible for a copy the Moralia in Job of Pope Gregory I

Pope Gregory I

Pope Gregory I , better known in English as Gregory the Great, was pope from 3 September 590 until his death...

 (Madrid, Biblioteca Nacional, Cod. 80). The manuscript was probably created at the monastery

Monastery

Monastery denotes the building, or complex of buildings, that houses a room reserved for prayer as well as the domestic quarters and workplace of monastics, whether monks or nuns, and whether living in community or alone .Monasteries may vary greatly in size – a small dwelling accommodating only...

 at San Millán de la Cogolla. There are 151 extant folios which measure 395mm by 225mm. The manuscript is illustrated with 52 surviving miniatures.