Possibly a shortened form of SANTIAGO
. In medieval records Diego
was Latinized as Didacus
, and it has been suggested that it in fact derives from Greek διδαχη (didache)
Didacus (or Diego) was a 15th-century Franciscan brother based in Alcalá, Spain. Other famous bearers of this name include Mexican muralist Diego Rivera (1886-1957) and Argentine soccer player Diego Maradona (1960-).