Question: Who was the son and heir of Henry Beauclerc?

Context:
Walter de Beauchamp (judge)
Walter de Beauchamp (1195/97–1236) was an English judge, son and heir of William de Beauchamp and Amice de Beauchamp, lord of Elmley, Worcester, and hereditary castellan of Worcester and sheriff of the county.
 A minor at his father's death, he did not obtain his shrievalty till February 1216.
 Declaring for Louis of France on his arrival (May 1216), he was excommunicated by the legate at Whitsuntide, and his lands seized by the Marchers.
 But hastening to make his peace, on the accession of Henry, he was one of the witnesses to his reissue of the charter, and was restored to his shrievalty and castellanship.
 He also Attested Henry's 'Third Charter,' on 11 February 1225.
 In May 1226 and in January 1227 he was appointed an itinerant justice, and 14 April 1236 he died, leaving by his wife Joane Mortimer, daughter of his guardian, Roger de Mortimer, whom he had married in 1212, and who died in 1225, a son and heir, William, who married the eventual heiress of the earls of Warwick, and was grandfather of Guy de Beauchamp, 10th Earl of Warwick.
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.
Kunala
Kunala (IAST: Kuṇāla ) (263 BC - ?)
 was a son of Emperor Ashoka and Queen Padmavati and the presumptive heir to Ashoka, thus the heir to the Mauryan Empire which once ruled almost all of the Indian subcontinent.
 After the departure of Mahendra, Ashoka's eldest son, he was supposed to be the heir to the empire, but was blinded by his step-mother, Tishyaraksha, at a young age in jealousy.
 While he was not able to take the throne, his son, Samprati, became his heir.
Baron Cottesloe
Baron Cottesloe, of Swanbourne and Hardwick in the County of Buckingham, is a title in the Peerage of the United Kingdom.
 It was created in 1874 for the Conservative politician and former Chief Secretary for Ireland, Sir Thomas Fremantle, 1st Baronet (1798–1890).
 He was the son of Admiral Sir Thomas Fremantle (1765–1819).
 Lord Cottesloe had already been created a Baronet, of Swanbourne in the County of Berkshire, in 1821, chiefly in recognition of his father's services, and with remainder to the latter's heirs.
 His father Sir Thomas Fremantle was created Baron Fremantle, of the Austrian Empire, which Lord Cottesloe inherited in 1819 with the death of his father.
 Subsequently, in 1822 he was given a Royal licence, which authorized him and his successors to use the title in Britain.
 However, a warrant issued on 27 April 1932 withdrew all the royal licences, only allowing the use of the title to the then current holders, their heir (if any was born) and their heir's heir (if any was born).
 Nowadays, John Fremantle, 5th Baron Cottesloe is the current holder of this title, and his son Hon. Thomas Henry Fremantle, heir to the Cottesloe Barony, will be the last future holder being allowed to use the Austrian title in the United Kingdom.
Henry I of England
Henry I (c. 1068 – 1 December 1135), also known as Henry Beauclerc, was King of England from 1100 to his death.
 Henry was the fourth son of William the Conqueror and was educated in Latin and the liberal arts.
 On William's death in 1087, Henry's elder brothers Robert Curthose and William Rufus inherited Normandy and England, respectively, but Henry was left landless.
 Henry purchased the County of Cotentin in western Normandy from Robert, but William and Robert deposed him in 1091.
 Henry gradually rebuilt his power base in the Cotentin and allied himself with William against Robert.
 Henry was present when William died in a hunting accident in 1100, and he seized the English throne, promising at his coronation to correct many of William's less popular policies.
 Henry married Matilda of Scotland but continued to have a large number of mistresses by whom he had many illegitimate children.
Idris bin Abdullah al-Senussi
Idris bin Abdullah al-Senussi (born 18 January 1957) is an exiled Libyan opposition figure and a claimant to the headship of the Sanussiyyah movement.
 While Libya’s legitimate royal family was under house arrest after Gaddafi overthrew their rule, Idris began claiming to be the heir to the Libyan throne, a claim that is contrary to the Constitution/Royal Decree.
 He has continued to claim he is the legitimate heir despite the fact that his cousin, Prince Mohammed El Senussi, is the designated heir of the last Libyan Crown Prince, and under the Constitution is the legitimate Heir to the Senussi Crown.
 However, he later stated that if the old Constitution of Libya (1951) (as amended in 1961) was restored post-Gaddafi, there would be free elections and the people would be united under the constitution with "some modifications where the part of the monarch will be taken out" and the people would be able to elect a head of state, who could be called "president or whatever they want to call him".
 The position of heir to the throne is also claimed by Prince Mohammed El Senussi, the son and designated heir of the last Libyan Crown Prince.
 Idris al-Senussi returned to Libya on 23 December 2011 and stated he would not be active in politics or campaigning for the monarchy.
 He returned to Libya in December 2011 with his cousin, Ahmed Zubair Al-Senussi.
Ranulf le Meschin, 3rd Earl of Chester
Ranulf le Meschin, 3rd Earl of Chester (1070−1129) was a late 11th- and early 12th-century Norman magnate based in northern and central England.
 Originating in Bessin in Normandy, Ranulf made his career in England thanks to his kinship with Hugh d'Avranches - the earl of Chester, the patronage of kings William II Rufus and Henry I Beauclerc, and his marriage to Lucy, heiress of the Bolingbroke-Spalding estates in Lincolnshire.
Matilda of Anjou
Matilda of Anjou, also known as Mahaut (c. 1111 – 1154) was married in 1119 to William Adelin, son and heir of Henry I of England.
Duke of Rothesay
Duke of Rothesay (Scottish Gaelic: "Diùc Baile Bhòid" , Scots: "Duik o Rothesay" ) is a dynastic title of the heir apparent to the British throne, currently Prince Charles.
 It was a title of the heir apparent to the throne of the Kingdom of Scotland before 1707, of the Kingdom of Great Britain from 1707 to 1801, and now of the United Kingdom of Great Britain and Northern Ireland.
 It is the title mandated for use by the heir apparent when in Scotland, in preference to the titles "Duke of Cornwall" (which also belongs to the eldest living son of the monarch, when and only when he is also heir apparent, by right) and "Prince of Wales" (traditionally granted to the heir apparent), which are used in the rest of the United Kingdom and overseas.
 The Duke of Rothesay also holds other Scottish titles, including those of Earl of Carrick, Baron of Renfrew, Lord of the Isles and Prince and Great Steward of Scotland.
 The title is named after Rothesay on the Isle of Bute, Argyll and Bute, but is not associated with any legal entity or landed property, unlike the Duchy of Cornwall.
England in the High Middle Ages
England in the High Middle Ages includes the history of England between the Norman Conquest in 1066 and the death of King John, considered by some to be the last of the Angevin kings of England, in 1216.
 A disputed succession and victory at the Battle of Hastings led to the conquest of England by William of Normandy in 1066.
 This linked the crown of England with possessions in France and brought a new aristocracy to the country that dominated landholding, government and the church.
 They brought with them the French language and maintained their rule through a system of castles and the introduction of a feudal system of landholding.
 By the time of William's death in 1087, England formed the largest part of an Anglo-Norman empire, ruled by nobles with landholdings across England, Normandy and Wales.
 William's sons disputed succession to his lands, with William II emerging as ruler of England and much of Normandy.
 On his death in 1100 his younger brother claimed the throne as Henry I and defeated his brother Robert to reunite England and Normandy.
 Henry was a ruthless yet effective king, but after the death of his only male heir in the White Ship tragedy, he persuaded his barons to recognise his daughter Matilda as heir.
 When Henry died in 1135 her cousin Stephen of Blois had himself proclaimed king, leading to a civil war known as The Anarchy.
 Eventually Stephen recognised Matilda's son Henry as his heir and when Stephen died in 1154, he succeeded as Henry II.

Answer: William Adelin