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Llys Rhosyr is a medieval domestic and administrative site located on the island of Anglesey in north Wales, designated as a scheduled ancient monument (SAM AN129) under Cadw protection. The site represents the remains of a princely court or llys dating principally to the thirteenth century, when it served as a seat of power within the Welsh principality of Gwynedd. Archaeological evidence and historical records indicate that Llys Rhosyr functioned as a centre of governance and residence for the ruling princes of North Wales during the high medieval period. The physical remains comprise earthwork features and structural evidence characteristic of medieval Welsh elite settlement, reflecting the organisation and status of a major administrative focus in medieval Wales.
Llys Rhosyr is a scheduled monument protected by Cadw under reference AN129. View the official record →
Llys Rhosyr is a medieval domestic and administrative site located on the island of Anglesey in north Wales, designated as a scheduled ancient monument (SAM AN129) under Cadw protection. It is designated a Scheduled Ancient Monument by Cadw under reference AN129.
Llys Rhosyr dates from the medieval period, and is classified as a manor. It is one of over 32,000 scheduled monuments protected across Britain.
Llys Rhosyr is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is AN129.
Several scheduled monuments lie within 10 km, including Hendai Medieval Farmstead (2.2 km), St Dwynwen's Church (4.2 km), Tywyn-y-Parc Promontory Fort (5.1 km).
Aubrey generates in-depth historical research for any address in Britain — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.
Research the area around Llys Rhosyr