Qualla: Plas Mawr

Plas Mawr: Introduction

Mon, 25 May 2026 00:00:00 GMT

Photo credit Rob Farrow, CC BY-SA 2.0. Robert Wynn had fought at the siege of Boulogne, traveled across Europe in the service of two of Henry VIII's senior officials, and returned to Conwy in middle age with a clear ambition: to build a house that would announce his arrival. Between 1576 and 1585, on a narrow burgage plot just off the High Street, he did exactly that. Plas Mawr - 'Great Hall' in Welsh - rose in three deliberate phases of stone, lime plaster and crow-stepped gable, blending North German Gothic flourishes Wynn had seen on the Continent with the masonry traditions of the Conwy valley. Four hundred and fifty years later, it is still standing, almost unchanged. Historian Rick Turner calls it 'the finest surviving town house of the Elizabethan era.'

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Image: Rob Farrow | CC BY-SA 2.0

Plas Mawr: A Self-Made Welshman

Mon, 25 May 2026 00:00:00 GMT

Photo credit Waterborough, CC BY-SA 3.0. Robert Wynn was not born to any of this. He came from a prosperous Caernarfonshire family, but his fortune was built in service - first to Sir Walter Stonor, then to Sir Philip Hoby, both senior administrators under Henry VIII. He was injured at Boulogne in 1544, soldiered in Sco...

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Image: Waterborough | CC BY-SA 3.0

Plas Mawr: Built in Three Acts

Mon, 25 May 2026 00:00:00 GMT

Photo credit Dave Spicer, CC BY-SA 2.0. Construction unfolded in three campaigns: the north wing in 1576-77, the central and south ranges in 1580, and the gatehouse and final flourishes in 1585. A single master carpenter likely oversaw the roof timbers across all three phases, working between jobs on fifteen other hous...

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Image: Dave Spicer | CC BY-SA 2.0

Plas Mawr: Heraldry on Every Ceiling

Mon, 25 May 2026 00:00:00 GMT

Photo credit A.D.Hope, CC BY-SA 4.0. Walk inside and the walls do not stop talking. Seven rooms still carry their original plasterwork, which historian Peter Smith called 'the most perfect and the most complete memorial to Elizabethan Wales.' In the upper north range alone, twenty-two different heraldic emblems are ...

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Image: A.D.Hope | CC BY-SA 4.0

Plas Mawr: Saved by a Lawsuit

Mon, 25 May 2026 00:00:00 GMT

Photo credit Hchc2009, CC BY-SA 3.0. Wynn died in 1598 and left a will so complicated that the resulting legal case dragged on until 1630. The dispute, fought between the family and the executor Sir Roger Mostyn, effectively froze the house in place. No one could redevelop it, modernise it, or pull it apart. By 1683...

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Image: Hchc2009 | CC BY-SA 3.0

Plas Mawr: Restored to 1665

Mon, 25 May 2026 00:00:00 GMT

Photo credit Phil Champion, CC BY-SA 2.0. Cadw's restoration ran for forty-two months and cost £3.3 million, winning the Royal Institution of Chartered Surveyors Building Conservation Award. The Victorian gallery added by the Academy was demolished. External stonework was re-rendered and lime-washed. Most rooms were retu...

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Image: Phil Champion | CC BY-SA 2.0