In 1262 Llywelyn ap Gruffudd captured Cefnllys Castle from Roger Mortimer — part of his aggressive expansion during the Second Barons' War period. Cefnllys, near Llandrindod Wells, was a Mortimer stronghold controlling the Ithon valley. Its capture gave Llywelyn effective control of Maelienydd (modern Radnorshire). The expansion southward was part of his grand strategy to be recognised as Prince of all Wales.
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Research a location near Radnorshire