Question: Which island is the castle located, of which Lorne Maclaine is Feudal Baron?

Context paragraphs:
Lorne Maclaine: Lorne Gillean Iain Maclaine of Lochbuie (born 1945) is the 26th hereditary Chief of Clan Maclaine of Lochbuie and Feudal Baron of Moy.  He is the son of Captain Gillean Robert Maclaine, 25th of Lochbuie, and Noreen Olive Beadon.  He currently resides in KwaZulu-Natal, South Africa, with his wife Sandra, Lady Lochbuie.

Mayor of Barnstaple: The Mayor of Barnstaple together with the Corporation long governed the historic Borough of Barnstaple, in North Devon, England.  The seat of government was the Barnstaple Guildhall.  The mayor served a term of one year and was elected annually on the Feast of the Assumption of the Virgin (15 August) by a jury of twelve.  However Barnstaple was a mesne borough and was not held by the Mayor and Corporation in chief from the king but from the feudal baron of Barnstaple, later known as the lord of the "Castle Manor" or "Castle Court".  The Corporation tried on several occasions to claim the status of a "free borough" which answered directly to the monarch and to divest itself of this overlordship, but without success.  The mayor was not recognised as such by the monarch, but merely as the bailiff of the feudal baron.  The powers of the borough were highly restricted, as was determined by an inquisition "ad quod damnum" during the reign of King Edward III (1327–1377), which from an inspection of evidence found that members of the corporation elected their mayor only by permission of the lord, legal pleas were held in a court at which the lord's steward, not the mayor, presided, that the borough was taxed by the county assessors, and that the lord held the various assizes which the burgesses claimed.  Indeed, the purported ancient royal charter supposedly granted by the Anglo-Saxon King Aethelstan (d.939) (King of the Anglo-Saxons from 924 to 927 and King of the English from 927 to 939) and held by the corporation, from which it claimed its borough status, was suspected to be a forgery.

Robert de Clifford, 1st Baron de Clifford: Robert de Clifford, 1st Baron de Clifford (c. 1274–1314), of Appleby Castle, Westmorland, feudal baron of Appleby and feudal baron of Skipton in Yorkshire, was an English soldier who became 1st Lord Warden of the Marches, responsible for defending the English border with Scotland.

Henry Courtenay, 1st Marquess of Exeter: Henry Courtenay, 1st Marquess of Exeter (c. 1498 – 9 December 1538), KG, PC, feudal baron of Okehampton, feudal baron of Plympton, of Tiverton Castle, Okehampton Castle and Colcombe Castle all in Devon, was a grandson of King Edward IV, nephew of the queen consort, Elizabeth of York and a first cousin of King Henry VIII.

Baron Berkeley: The title Baron Berkeley originated as a feudal title and was subsequently created twice in the Peerage of England by writ.  It was first granted by writ to Thomas II de Berkeley, 1st Baron Berkeley (1245–1321), 6th feudal Baron Berkeley, in 1295, but the title of that creation became extinct at the death of his great-great-grandson, the fifth Baron by writ, when no male heirs to the barony by writ remained, although the feudal barony continued.  The next creation by writ was in 1421, for the last baron's nephew and heir James Berkeley.  His son and successor William was created Viscount Berkeley in 1481, Earl of Nottingham in 1483, and Marquess of Berkeley in 1488.  He had no surviving male issue, so the Marquesate and his other non-inherited titles became extinct on his death in 1491, whilst the barony passed "de jure" to his younger brother Maurice.  However William had disinherited Maurice because he considered him to have brought shame on the noble House of Berkeley by marrying beneath his status to Isabel, daughter of Philip Mead of Wraxhall, an Alderman and Mayor of Bristol.  Instead he bequeathed the castle, lands and lordships comprising the Barony of Berkeley to King Henry VII and his heirs male, failing which to descend to William's own rightful heirs.  Thus on the death of King Edward VI in 1553, Henry VII's unmarried grandson, the Berkeley inheritance returned to the family.  Therefore, Maurice and his descendants from 1492 to 1553 were "de jure" barons only, until the return of the title to the senior heir Henry (and indirectly to his mother Anne), becoming "de facto" 7th Baron in 1553.  Upon his death he was succeeded by his relative George Harding.

William Courtenay, 1st Earl of Devon: William Courtenay, 1st Earl of Devon (1475 – 9 June 1511), feudal baron of Okehampton and feudal baron of Plympton, was a member of the leading noble family of Devon.  His principal seat was Tiverton Castle, Devon with further residences at Okehampton Castle and Colcombe Castle, also in that county.

Hugh de Courtenay, 2nd/10th Earl of Devon: Sir Hugh de Courtenay, 2nd/10th Earl of Devon (12 July 1303 – 2 May 1377), 2nd Baron Courtenay, feudal baron of Okehampton and feudal baron of Plympton, played an important role in the Hundred Years War in the service of King Edward III.  His chief seats were Tiverton Castle and Okehampton Castle in Devon.  The ordinal number given to the early Courtenay Earls of Devon depends on whether the earldom is deemed a new creation by the letters patent granted 22 February 1334/5 or whether it is deemed a restitution of the old dignity of the de Redvers family.  Authorities differ in their opinions, and thus alternative ordinal numbers exist, given here.

Moy Castle: Moy Castle is a ruined castle near Lochbuie on the Isle of Mull, Scotland.

Feudal earldom: A feudal earldom is a Scottish feudal title that is held "en baroneum", which means that its holder, who is called a feudal earl, is also always a feudal baron.  A feudal earldom is an ancient title of nobility in Scotland.  The holder may or may not be a Lord of Regality, which meant that the holder was appointed by the Crown and had the power of "pit and gallows", meaning the power to authorise the death sentence.  A feudal earl ranks above a feudal lord and a feudal baron (being a feudal baron of a higher degree), but below an earldom which is a title in the Peerage of Scotland.  Feudal earldoms are very rare.  A peer is invariably addressed as 'Lord Placename' or 'Lord Such-and-so', whilst those holding a feudal earldom are addressed 'Earl of Placename'.  Scottish titles, in order of precedence, are as follows: Duke, Marquis, Earl, Viscount, Lord, Baronet, Knight, feudal Baron, Clan Chief, Esquire/Gentleman.  Wallace states that "Lordships, Earldoms, Marquisates and Dukedoms differ only in name from Baronies" but continues "one whose property was erected into a Lordship ranked before a simple Baron" and "A person to whom an Earldom belonged, would be superior to a person who had no more than a lordship ... One, whose lands were incorporated into a Marquisate, was superior to both ... A man, who owned a fief elevated into a Dukedom, was exhaulted above all three."  However, Lord Stair states that Lordships or Earldoms are "but more noble titles of a Barony".

Baron de Clifford: Baron de Clifford is a title in the Peerage of England.  It was created in 1299 for Robert de Clifford ("c."1274–1314), feudal baron of Clifford in Herefordshire, feudal baron of Skipton in Yorkshire and feudal baron of Appleby in Westmoreland.  The title was created by writ, which means that it can descend through both male and female lines.  The Norman family which later took the name "de Clifford" settled in England after the Norman Conquest of 1066 and was first seated in England at Clifford Castle in Herefordshire.  The first Baron served as Earl Marshal of England but was killed at the Battle of Bannockburn in 1314.  His 8th generation descendant the 11th Baron, was created Earl of Cumberland in 1525, whose grandson the 3rd Earl was a noted naval commander.  On the latter's death in 1605 the earldom passed to his younger brother, the 4th Earl (see the Earl of Cumberland for later history of this title).

Supporting paragraphs: Lorne Maclaine Moy Castle
Answer: the Isle of Mull