History
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Prehistory[edit]
The history of the settlement of the local people of Anglesey starts in the Mesolithic period. Anglesey and Great Britain were uninhabitable until after the previous ice age. It was not until 12,000 years ago that the island of Great Britain became hospitable. The oldest excavated sites on Anglesey include Trwyn Du (Welsh: Black nose) at Aberffraw. The Mesolithic site located at Aberffraw Bay (Porth Terfyn) was buried underneath a Bronze Age 'kerb cairn' which was constructed c. 2000 BC. The bowl barrow (kerb cairn) covered a material deposited from the early Mesolithic period; the archeological find dates to 7000 BC. After millennia of hunter-gather civilisation in the British Isles, the first villages were constructed from 4000 BC. Neolithic settlements were built in the form of long houses, on Anglesey is one of the first villages in Wales, it was built at Llanfaethlu. Also an example permanent settlement on Anglesey is of a Bronze Age built burial mound, Bryn Celli Ddu (English: Dark Grove Hill). The mound started as a henge enclosure around 3000 BC and was adapted several times over a millennium.
Dolmen on Anglesey (Samuel Alken, 1794)Bryn Celli Ddu burial chamber, Anglesey
There are numerous megalithic monuments and menhirs in the county, testifying to the presence of humans in prehistory. Plas Newydd is near one of 28 cromlechs that remain on uplands overlooking the sea. The Welsh Triads claim that the island of Anglesey was once part of the mainland.
Bronze Age to Roman times[edit]
See also: Bronze Age Britain and British Iron Age
After the Neolithic age, the Bronze Age began (c. 2200 BC – 800 BC). Some sites were continually used for thousands of years from original henge enclosures, then during the Iron Age, and also some of these sites were later adapted by Celts into hillforts and finally were in use during the Roman period (c. 100 AD) as roundhouses. Castell Bryn Gwyn (English: White hill castle, also called Bryn Beddau, or the "hill of graves") near Llanidan, Anglesey is an example of a Neolithic site that became a hillfort that was used until the Roman period by the Ordovices, the local tribe who were defeated in battle by a Roman legion (c. 78 AD). Bronze Age monuments were also built throughout the British Isles. During this period, the Mynydd Bach cairn in South-west Anglesey was being used. It is a Beaker period prehistoric funerary monument.
During the Iron Age the Celts built dwellings huts, also known as roundhouses. These were established near the previous settlements. Some huts with walled enclosures were discovered on the banks of the river (Welsh: afon) Gwna near. An example of a well-preserved hut circle is over the Cymyran Strait on Holy Island. The Holyhead Mountain Hut Circles (Welsh: Tŷ Mawr / Cytiau'r Gwyddelod, Big house / "Irishmen's Huts") were inhabited by ancient Celts and were first occupied before the Iron Age, c.  1000 BC. The Anglesey Iron Age began after 500 BC. Archeological research discovered limpet shells which were found from 200 BC on a wall at Tŷ Mawr and Roman-era pottery from the 3rd to 4th centuries AD. Some of these huts were still being used for agricultural purposes as late as the 6th century. The first excavation of Ty Mawr was conducted by William Owen Stanley of Penrhos, Anglesey (son of Baron Stanley of Alderley).
Modern Anglesey[edit]
Roman occupation[edit]
Historically, Anglesey has long been associated with the druids. The Roman conquest of Anglesey began in 60 AD when the Roman general Gaius Suetonius Paulinus, determined to break the power of the druids, attacked the island using his amphibious Batavian contingent as a surprise vanguard assault and then destroyed the shrine and the nemeta (sacred groves). News of Boudica's revolt reached him just after his victory, causing him to withdraw his army before consolidating his conquest. The island was finally brought into the Roman Empire by Gnaeus Julius Agricola, the Roman governor of Britain, in 78 AD. During the Roman occupation, the area was notable for the mining of copper. The foundations of Caer Gybi, a fort in Holyhead, are Roman, and the present road from Holyhead to Llanfairpwllgwyngyll was originally a Roman road. The island was grouped by Ptolemy with Ireland ("Hibernia") rather than with Britain ("Albion").
Kingdom of Gwynedd and House of Aberffraw[edit]
Beaumaris Castle, constructed after 1294
After the Roman departure from Britain in the early 5th century, pirates from Ireland colonised Anglesey and the nearby Llŷn Peninsula. In response to this, Cunedda ap Edern, a Gododdin warlord from Scotland, came to the area and began to drive the Irish out. This was continued by his son Einion Yrth ap Cunedda and grandson Cadwallon Lawhir ap Einion; the last Irish invaders were finally defeated in battle in 470.[citation needed]
During the 9th century, King Rhodri Mawr unified Wales and separated the country into at least 3 provinces between his sons. He gave Gwynedd to his son, Anarawd ap Rhodri, who founded the medieval Welsh dynasty, The House of Aberffraw on Anglesey. The island had a good defensive position, and so Aberffraw became the site of the royal court (Welsh: Llys) of the Kingdom of Gwynedd. Apart from devastating Danish raids in 853 and 968 in Aberffraw, it remained the capital until the 13th, after Rhodri Mawr had moved his family seat from Caernarfon and built a royal palace at Aberffraw in 873. This is when improvements to the English navy made the location indefensible. Anglesey was also briefly the most southerly possession of the Norwegian Empire.[citation needed]
After the Irish, the island was invaded by Vikings—some raids were noted in famous sagas (see Menai Strait History) such as the Jómsvíkinga—and by Saxons, and Normans, before falling to Edward I of England in the 13th century. The connection with the Vikings can be seen in the name of the island. In ancient times it was called "Maenige" and received the name "Ongulsey" or Angelsoen, from where the current name originates.
Anglesey (with Holy Island) is one of the 13 historic counties of Wales. In medieval times, before the conquest of Wales in 1283, Môn often had periods of temporary independence, when frequently bequeathed to the heirs of kings as a sub-kingdom of Gwynedd, an example of this was Llywelyn ap Iorwerth (Llywelyn I, the Great c. 1200s) who was styled the Prince of Aberffraw. After the Norman invasion of Wales was one of the last times this occurred a few years after 1171, after the death of Owain Gwynedd, when the island was inherited by Rhodri ab Owain Gwynedd, and between 1246 and about 1255 when it was granted to Owain Goch as his share of the kingdom. After the conquest of Wales by Edward I, Anglesey became a county under the terms of the Statute of Rhuddlan of 1284. Hitherto it had been divided into the cantrefi of Aberffraw, Rhosyr and Cemaes.
During 1294 as a rebellion of the former house of Aberffraw, Prince Madog ap Llywelyn had attacked King Edward I's castles in North Wales. As a direct response, Beaumaris Castle was constructed to control Edward's interests in Anglesey, but by the 1320s the build was abandoned and never complete. The castle was besieged by Owain Glyndŵr in the early 15th century. It was ruinous by 1609; however, the 6th Viscount Bulkeley purchased the castle from the Crown in 1807 and it has been open to the public under the guardianship of the Crown ever since 1925.
17th to 20th centuries[edit]
Due to its geographic proximity, Anglesey (and particularly Holyhead) enjoyed close cultural ties with Ireland throughout the later parts of this period. A 2023 study in The Welsh History Review by historian Adam N. Coward highlights the interconnectedness of landed gentry families in Ireland and Anglesey between the 17th and 20th centuries, with connections ranging from close geographical proximity and shared transport networks to marriage and family ties. One example, the article notes, is that in 1663 the Duke of Ormonde wrote from Dublin Castle to Lord Bulkley of Baron Hill, Anglesey, who had been created Viscount Bulkeley of Cashel in 1644, about bringing partridges from Anglesey to Ireland for a hunt.
20th century[edit]
Plas Newydd, Anglesey constructed by 19th centuryShire Hall, Llangefni
The Shire Hall in Llangefni was completed in 1899. During the First World War, the Presbyterian minister and celebrity preacher, John Williams, toured the island as part of an effort to recruit young men as volunteers. The island's location made it ideal for monitoring German U-Boats in the Irish Sea, with half a dozen airships based at Mona. German POWs were kept on the island. By the end of the war, some 1,000 of the island's men had died on active service.
In 1936 the NSPCC opened its first branch on Anglesey.
During the Second World War, Anglesey received Italian POWs. The island was designated a reception zone, and was home to evacuee children from Liverpool and Manchester.
In 1971, a 100,000 ton per annum aluminum smelter was opened by Rio Tinto Zinc Corporation and British Insulated Callender's Cables with Kaiser Aluminum and Chemical Corporation as a 30 per cent partner.
