[EN] The Codex Samuelis (León, Archivo Capitular, 22) is a manuscript made up of three sections, all of which were executed in Cordoba in the 9th Century. At the beginning of the 10th Century it came into the possession of the monastery of San Cosme and San Damian in Abellar (Leon). Although it is a well-known and much-studied codex, until now no one had noticed that one of the pieces added in Abellar in the first folios of the manuscript is an extract taken from Book I, ch. 97 of the Apologeticum aduersus Elipandum by Beatus of Liebana and Eterius of Osma. The Apologeticum, composed at the end of 785, is a treatise intended to combat the adoptionist heresy defended by Archbishop Elipandus of Toledo. Until now, the preserved archetype of the entire manuscript tradition was the codex Madrid, Biblioteca Nacional, 10018, copied in Cordoba in the second half of the 9th Century. This article offers the first complete description of the contents of the Codex Samuelis, analyses with particular attention the two texts related to the Cordovan abbot Speraindeo (ff. 5v-8v), transcribes and studies the extract from the Apologeticum (37 lines from Beng Löfstedt’s edition in the Corpus Christianorum), and publishes some other pieces of particular interest from this manuscript
