Celtic names, derived from the ancient languages of Ireland, Scotland, Wales, and Brittany, typically refer to nature, mythology, or military traditions. Some prominent examples are Aidan ('little fire'), Brigid ('exalted one'), and Cian ('ancient'). Siobhán (Irish) and Llywelyn (Welsh) are two names of Gaelic, Brythonic, or Pictish origins. Surnames typically begin with 'Mac' (son of) or 'O' (descendant of), keeping familial ties.
Celtic mythology has had a considerable impact on naming customs, with characters like Fionn, Niamh, and Taliesin influencing future generations. Celtic names, whether traditional or modernized, are profoundly rooted in history, culture, and identity.