Rhos-on-Sea (Welsh: Llandrillo-yn-Rhos) is a seaside resort and community in Conwy County Borough, Wales. The population was 7,593 at the 2011 census. It adjoins Colwyn Bay and is named after the Welsh kingdom of Rhos established there in late Roman Britain as a sub-kingdom of Gwynedd. It later became a cantref (hundred). From Wikipedia
