Diego

Diego is a Spanish male name derived from the Hebrew Yaʻăqōbh (Jacob), via the name of Saint James the Greater (Sant Yago), re-analysed as Santiago and San Diego. The assimilation of the final t of Sant into the name is attested in other saints' names, including Spanish and Portuguese Telmo 'Elmo' (< Sant Elmo) and Slovenian Tilen 'Giles' (< Šent Ilen).