Qualla: Acton Castle

Acton Castle: Introduction

Sat, 23 May 2026 00:00:00 GMT

Photo credit Nilfanion, CC BY-SA 4.0. John Stackhouse built a castle so he could study seaweed. That sentence sounds like a joke, but it is the literal origin of Acton Castle - a small castellated granite mansion that still stands on the cliffs near Perranuthnoe, looking down on Mount's Bay. Stackhouse was a distinguished botanist of Pendarves, with an interest in marine algae and in plants mentioned by the ancient Greek author Theophrastus. He needed a coastal base from which to walk down to the rocks and the rockpools, gather seaweed in tanks, and produce what would become his illustrated work Nereis Britannica - one of the first serious British treatises on seaweed, published in three parts between 1795 and 1801. So around 1775 he built himself a battlemented house above the cove, named it after his wife's family, and got to work on the algae. Then a smuggler named John Carter moved in.

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Image: Nilfanion | CC BY-SA 4.0

Acton Castle: Built for Seaweed

Sat, 23 May 2026 00:00:00 GMT

Photo credit Nilfanion, CC BY-SA 4.0. The castle is small but emphatic - dressed granite facade and chimneys, walls topped with embattled parapets, a grouted roof. The early-twentieth-century wings of two storeys with tripartite windows were added during the building's conversion to a country hotel, but the core eigh...

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Image: Nilfanion | CC BY-SA 4.0

Acton Castle: Nereis Britannica

Sat, 23 May 2026 00:00:00 GMT

Photo credit Nilfanion, CC BY-SA 4.0. Between 1795 and 1801 Stackhouse published Nereis Britannica in three parts, illustrated with the algae he had collected and grown at the castle. The book belongs to a moment when British natural history was transforming itself from gentleman amateurism into systematic science. S...

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Image: Nilfanion | CC BY-SA 4.0

Acton Castle: The King of Prussia

Sat, 23 May 2026 00:00:00 GMT

Photo credit Lewis Clarke, CC BY-SA 2.0. While the Stackhouses were the legal owners, the castle had a second life its proprietor seems not to have noticed. One of the Stackhouse tenants, a local man named John Carter, rented the adjoining farm and saw an opportunity in the castle's frequent emptiness. Carter was the mo...

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Image: Lewis Clarke | CC BY-SA 2.0

Acton Castle: Praed, Field, Lanyon, Hotel, Flat

Sat, 23 May 2026 00:00:00 GMT

Photo credit Nilfanion, CC BY-SA 4.0. The castle passed through nineteenth-century hands. Bulkeley Praed died there in 1852. His sister inherited and sold to Thomas Field, who took up residence and stayed for a number of years. In 1861 Field sold to Richard Lanyon. After Lanyon's death his widow stayed on at the cast...

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Image: Nilfanion | CC BY-SA 4.0