Sources of the Notabilia (1427), a medieval handwritten grammatical treatise from the Portuguese monastery of Alcobaça

What is it about?

It is about the (explicit and unnamed) sources of the most significant Latin-Portuguese medieval grammatical treatise (unpublished, but written in 1427) titled Hic incipiunt notabilia que fecit cunctis (Portuguese National Library, codex Alc. 79).

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Why is it important?

The manuscript is a quite elaborate volume and identifies several main sources, such as Donatus (mid- 4th century), Priscian (late 5th to early 6th century), Alexander of Villa Dei (c.1170–c.1250), Giovanni Balbi de Genova (fl.1286–1298), and two pre-modist or speculative grammarians, Petrus Helias (c.1100–post-1166) and Robert Kilwardby (c.1215–1279), but it might have other unnamed references, such as, hypothetically, the Catalan-Aragonese grammaticae proverbiandi (fifteenth century) and the Italian Notabilia by Giovanni da Soncino (? –c.1363).