Vienna, ÖNB, Cod. 806 is a compiled manuscript, with in total 197 leaves (including flyleaves), consisting of several originally independent parts (fascicles and fragments). Fascicle I (foll. 1, 1*, 2-51/54) holds Isid. eccl. off.: The first part (foll. 1r-39v) was written in the 1st half of the 9th century in Lorsch, the rest (foll. 40r-51r) was added in the 10th/11th century. The catechist texts on foll. 51r-54r were presumably added in the 11th century.