1 2 3 Íñigo; in: Roberto Faure, Diccionario de nombres propios, 2007, ISBN 978-84-670-2375-6
Etymology
Attested as Enneco, Ennego and other variants in medieval documents.[1] Probably from the Basque proper name Ennece.[1] A relationship with the Latin proper name Ignatius is very unlikely.[1] Basque cognates are Eneko and Eneka.
The Spanish family name Íñiguez is derived from Íñigo and the suffix -ez.