On palaeographic, codicological, textual and historic-cultural grounds, 1. this paper rejects the attribution to Pinciano of BH MS 41 (1) y (2) —which contains groundwork for the Complutensian Polyglot Bible— and attributes BH MS (2) to Bartolomé de Castro; 2. basing on BH MS 41 (3) it also throws light on the origin of the Greek types used in the Polyglot´s New Testament and connects the choice of these types to Antonio de Nebrija; 3. it rejects the attribution to Pinciano of BH MS 14 —which contains lexicographic material for the Polyglot—; and 4. it analyses the textual sources of the Greek column of Polyglot´s Psalms.
