Martianus Hiberniensis (Martian the Irishman) (c. 819 - 875), was a teacher, scribe, and master of the cathedral school at Laon.
A copy of a letter from Martianus to a fellow humanist, Servatus Lupus of Ferrières, has survived.
"Martin is especially remarkable for his considerable knowledge of Greek, being particularly noted as the scribe of the most extensive Greek-Latin thesaurus then in existence in western Europe (Laon MS 444), which he may possibly have copied from an Irish exemplar.
"In his role as teacher and supervisor of a school of scribes he cultivated the use of Carolingian minuscule, a very neat and legible type" in place of his native insular script (Breen, 2009, p. 405) At least twenty-one manuscripts survive containing specimens of his autograph, which are now housed in Laon, Paris, and Berlin.
Breen (2009, p. 405) describes Martianus's legacy as not as an original thinker and translator of works in Greek, but as a humanist and educator of great distinction."