Question: Where is the castle that John Crabbe defended againt English forces in 1318?

Context articles: Mount Jackson (Antarctica)
Battle of Fort Albany (1693)
Berwick Castle
John Crabbe (died 1352)
Siege of Guadeloupe
Castell y Bere
Mount Cunningham
John Crabbe
John Crabbe Cunningham
Harlech Castle

Mount Jackson (Mount Andrew Jackson and Mount Ernest Gruening) is a mountain that dominates the upland of the southern part of the Antarctic Peninsula.
 It is located in Palmer Land, within the Antarctic claims of Argentina, Chile and the United Kingdom.
 With an elevation of 3184 m , Mount Jackson is the highest mountain in the Antarctic Peninsula and the British Antarctic Territory.
 Discovered by members of the United States Antarctic Service, 1939–41, it was named for Andrew Jackson, the seventh President of the United States.
 The first ascent of Mount Jackson was made by a team led by John Crabbe Cunningham of the British Antarctic Survey (BAS) in 1964.
 Mount Jackson's geology was studied in 1972 as part of the Palmer Island investigations by a team of geologists.
The Battle of Fort Albany in 1693 was the successful recapture by English forces of the Hudson's Bay Company trading outpost at Fort Albany in the southern reaches of Hudson Bay.
 The fort, captured by a French expedition in 1686 and held by them in a battle the next year, was briefly defended by five Frenchmen, who then abandoned the fort and its stockpile of furs to a four-ship English fleet commanded by James Knight.
Berwick Castle is a ruined castle in Berwick-upon-Tweed, Northumberland, England.
John Crabbe (before 1305 – 1352) was a Flemish merchant, pirate and soldier.
 He defended Berwick Castle for the Scots against English forces in 1318, but after being captured by the English in 1332 assisted the English when they again besieged at Berwick in 1333, and became a loyal servant of Edward III, for whom he also fought at the Battle of Sluys.
The 1703 Siege of Guadeloupe was a failed attempt by English forces led by Christopher Codrington to capture the French isle of Guadeloupe during the War of the Spanish Succession.
 A vigorous defense by Guadeloupe's governor, Charles Auger, reinforcements he received from Martinique, and a shortage of supplies in the English forces led to the lifting of the siege.
Castell y Bere is a Welsh castle near Llanfihangel-y-pennant in Gwynedd, Wales.
 Constructed by Llywelyn the Great in the 1220s, the stone castle was intended to maintain his authority over the local people and to defend the south-west part of the princedom of Gwynedd.
 In 1282 war with Edward I of England resulted in the death of Llywelyn's grandson, Llywelyn ap Gruffudd, and Castell y Bere fell to English forces.
 Edward I expanded the castle further and established a small town beside it.
 In 1294 the Welsh leader Madoc ap Llywelyn mounted a major revolt and the castle was besieged and apparently burnt.
 Edward did not repair it and it became ruined.
 Today it is in the hands of Cadw and operated as a tourist attraction.
Mount Cunningham is a mountain at the west end of South Georgia's Esmark Glacier.
 It is situated between Jossac Bight and Queen Maud Bay.
 With an elevation of 1218 m , it is the 16th highest mountain in South Georgia.
 The mountain was named after Scottish mountaineer John Crabbe Cunningham as a memorial after his death on 31 January 1980, following a climbing accident when struck by waves off Holyhead.
Stephen Allan John Crabbe (born 20 October 1954) is an English former professional footballer.
 He played for six Football League clubs, with his most successful spell coming at Gillingham.
John Crabbe Cunningham (1927 – 31 January 1980) was a Scottish climber.
 Born in Glasgow, he climbed extensively in the Scottish mountains, where he pioneered new techniques of ice climbing.
Harlech Castle (Welsh: "Castell Harlech" ), located in Harlech, Gwynedd, Wales, is a medieval fortification, constructed atop a spur of rock close to the Irish Sea.
 It was built by Edward I during his invasion of Wales between 1282 and 1289 at the substantial cost of £8,190.
 Over the next few centuries, the castle played an important part in several wars, withstanding the siege of Madog ap Llywelyn between 1294–95, but falling to Owain Glyndŵr in 1404.
 It then became Glyndŵr's residence and military headquarters for the remainder of the uprising until being recaptured by English forces in 1409.
 During the 15th century Wars of the Roses, Harlech was held by the Lancastrians for seven years, before Yorkist troops forced its surrender in 1468, a siege memorialised in the song "Men of Harlech".
 Following the outbreak of the English Civil War in 1642, the castle was held by forces loyal to Charles I, holding out until 1647 when it became the last fortification to surrender to the Parliamentary armies.
 In the 21st century the ruined castle is managed by Cadw, the Welsh Government's historic environment service, as a tourist attraction.