The town existed as
Porthaethwy for centuries and still has a house which dates from the 17th century. The name derives from
Porth (harbour) +
Daethwy (the name of a local Celtic tribe and later of a local medieval commote). It is likely that a community existed here in
Roman times as it is the shortest crossing of the
Menai Strait. In the 9th century, St Tysilio lived here as a hermit on Church Island. A ferry across the Menai was first recorded in 1292. When the bridge opened in 1826, the ferry closed, but connections with the sea remained through the import, export and shipbuilding trades.
Lewis Carroll's
Through the Looking Glass (1872) mentions the Menai Bridge in chapter 8 in a nonsense song. From 1877 to 1920, the ship
HMS Clio was docked at Menai Bridge; it was lent to the North Wales Society to teach young men the ways of seafaring. Many local people believed the ship was used for some type of prison, but this was not entirely true. The ship was home to young men who were in need of discipline to keep them from getting into serious trouble; some were sent to the Clio against their will. Its centre lies approximately 20 metres offshore from the Belgian Promenade just upstream of the suspension bridge. Only the rocky tip of the island is visible at high spring tide but at low tide area of rock, sand and some seaweed are exposed which provides feeding ground for a variety of wading birds including
oystercatcher,
redshank, and
curlew. It is the site of one of the many ferry crossings of the Menai Strait which were in use prior to the construction of the suspension bridge in 1826 In 1914,
Belgian refugees from
Mechelen, who had settled in the area, built a promenade (the
Belgian promenade) out of gratitude for the town's hospitality. The promenade was built along the Menai Strait from Ynys Tysilio (
Church Island) to Carreg yr Halen and was completed in 1916. It was rebuilt in 1963. The ceremonial reopening in 1965 was performed by the only surviving refugee, Eduard Wilhelms. Most of the refugees lived at three houses in Menai Bridge, with 12 housed at the Village Hall in Llandegfan. Most of the men were skilled in
marquetry. A special celebration was held in 2014 at Menai Bridge to celebrate to centenary of the construction of the promenade. ==TV location==