Dublin, Ireland (for O'Neill's origins)

Dublin, the capital of Ireland, has a rich history dating back over a thousand years. It grew around a Viking settlement called Dubhlinn, meaning "black pool," near the River Liffey. Over time, Dublin became a prominent trading and cultural hub, especially during the medieval period. The O'Neill surname is associated with the Gaelic noble family, originally from the Kingdom of Tír Eoghain in the north. While their roots predate Dublin’s formation, O'Neill descendants may have migrated to or interacted with Dublin over centuries of Ireland’s history, reflecting the interconnectedness of Irish clans and the city’s evolving society.