Didacus

Latin

Etymology

An exclusively Iberian name recorded from the mid-8th century, and frequently throughout the 9th century, predominantly in northwestern Iberia.

Of unknown origin. Suggestions have included: a masculine derivation from Greek διδαχή (didakhḗ), perhaps by conflation with διάδοχος (diádokhos); an extension of Latin Didus, Didius (masculine form of Dido) with the Basque suffix -ko-; a Celtic *Divakos, from *deiwos "god"; derivation from Celtiberian Titiacus, from a presumed *Tritiakos. Vernacular forms Diaco, Diago by the 10th century, the form Diego is recorded from the late 11th century.

Proper noun

Dīdacus m sg (genitive Dīdacī); second declension (Early Medieval Latin)

a male given name

Declension

Second-declension noun, singular only.

	singular
nominative	Dīdacus
genitive	Dīdacī
dative	Dīdacō
accusative	Dīdacum
ablative	Dīdacō
vocative	Dīdace

Derived terms

Didacopolis

Descendants

Catalan: Dídac
Spanish: Diego
Portuguese: Diogo

References

Lidia Becker, Hispano-romanisches Namenbuch: Untersuchung der Personennamen vorrömischer, griechischer und lateinisch-romanischer Etymologie auf der Iberischen Halbinsel im Mittelalter (6.-12. Jahrhundert), Walter de Gruyter (2009), 385–389.