From the Old French form of the Greek name Eugenios (from eugenēs ‘well-born, noble’). This name was borne by various early saints, notably a 5th-century bishop of Carthage, a 7th-century bishop of Toledo, and four popes. It is sometimes used as an Anglicized form of Irish Eóghan and has also been used as an Anglicized form of the Irish name Aodh.
English: from the Old English personal name Tāta, possibly a short form of various compound names with the obscure first element tāt, or else a nursery formation. This surname is common and widespread in Britain; the chief area of concentration is northeastern England, followed by northern Ireland.