Maddox surname meaning

Maddox is an English surname of Welsh origin from the personal name Madog (earlier Madawc), whose modern Welsh relative madog is glossed “goodly.” As a given name and surname it was common in medieval Wales and in English border counties. Maddock and Maddocks are sister forms; Maddux and Maddex are later American spellings. The -s of Maddocks / Maddox marks a patronymic or possessive “son of Madog” shape rather than a place-name. Parent’s name is the type, and the Madog reading is high confidence.