Patrick Ruthven, 1st Earl of Forth
Patrick Ruthven, 1st Earl of Forth and 1st Earl of Brentford( c. 1573 – 2 February 1651) was a Scottish nobleman, general, and diplomat.
Isabel Marshal
Isabel Marshal (9 October 1200 – 17 January 1240) was a medieval English countess.
She was the wife of both Gilbert de Clare, 4th Earl of Hertford and 5th Earl of Gloucester and Richard, 1st Earl of Cornwall (son of King John of England).
With the former, she was a great grandmother of King Robert the Bruce of Scotland.
Humphrey de Bohun, 2nd Earl of Hereford
Humphrey( IV) de Bohun( 1204 – 24 September 1275) was 2nd Earl of Hereford and 1st Earl of Essex, as well as Constable of England.
He was the son of Henry de Bohun, 1st Earl of Hereford, and Maud FitzGeoffrey.
Edmund Mortimer, 3rd Earl of March
Edmund de Mortimer, 3rd Earl of March and" jure uxoris" Earl of Ulster( 1 February 135227 December 1381) was son of Roger Mortimer, 2nd Earl of March, by his wife Philippa, daughter of William Montagu, 1st Earl of Salisbury and Catherine Grandison.
Richard of Cornwall
Richard (5 January 1209 – 2 April 1272), second son of John, King of England, was the nominal Count of Poitou (1225–43), Earl of Cornwall (from 1225) and King of Germany (from 1257).
He was one of the wealthiest men in Europe and joined the Barons' Crusade, where he achieved success as a negotiator for the release of prisoners and assisted with the building of the citadel in Ascalon.
William Lindsay, 18th Earl of Crawford
William Lindsay, 18th Earl of Crawford and 2nd Earl of Lindsay( April 1644 – 6 March 1698) was a Scottish noble and politician.
Lindsay was the eldest son of John Lindsay, 10th Lord Lindsay of the Byres, 17th Earl of Crawford, and 1st Earl of Lindsay, by his wife, Lady Christian Hamilton, daughter of the Earl of Haddington.
William succeeded to the earldoms in 1678.
He was a zealous Presbyterian, president of the Convention parliament in 1689, a commissioner of the treasury in 1690, and one of the commissioners for settling the government of the Church of Scotland.
He married firstly Lady Mary Johnstone, daughter of 1st Earl of Annandale and Hartfell, in 1670.
They had one son:
He married secondly Lady Henrietta Fleming, daughter of Charles Seton, 2nd Earl of Dunfermline and widow of 5th Earl of Wigtown, and had further issue.
Robert Stewart, 1st Earl of March
Robert Stewart, 1st Earl of Lennox then 1st Earl of March( c. 152229 March 1586) was a Scottish nobleman of the family of Stewart of Darnley.
Álvaro Gonçalves da Maia
Álvaro Gonçalves da Maia( c.1370–1449) was a Portuguese nobleman, member of the Court of John I of Portugal.
He served as Ambassador in Aragon.
His parents were Martim da Maia and Ana Afonso de Lanços, daughter of Florência Antónia de Lanços and Richard of Teyve, grandson of Richard, 1st Earl of Cornwall.
Richard de Redvers, 2nd Earl of Devon
Richard de Redvers, 2nd Earl of Devon( died 1162) was Earl of Devon from 1155 until his death and was feudal baron of Plympton in Devon.
He married Denise, one of the daughters and coheiresses of Reginald, Earl of Cornwall.
He was High Sheriff of Devon from 1154 – 1157.
He was the son of Baldwin de Redvers, 1st Earl of Devon and brother of William de Reviers, 5th Earl of Devon.
He was succeeded by his son Baldwin de Redvers, 3rd Earl of Devon( died 1188).
John, King of England
John (24 December 1166 – 19 October 1216) was King of England from 1199 until his death in 1216.
He lost the Duchy of Normandy and most of his other French lands to King Philip II of France, resulting in the collapse of the Angevin Empire and contributing to the subsequent growth in power of the French Capetian dynasty during the 13th century.
The baronial revolt at the end of John's reign led to the sealing of ", a document sometimes considered an early step in the evolution of the constitution of the United Kingdom.
John was the youngest of the four surviving sons of King Henry II of England and Duchess Eleanor of Aquitaine.
He was nicknamed John Lackland because he was not expected to inherit significant lands.
He became Henry's favourite child following the failed revolt of 1173–74 by his brothers Henry the Young King, Richard, and Geoffrey against the King.
John was appointed the Lord of Ireland in 1177 and given lands in England and on the continent.
The war between Henry II and his eldest sons ended with the deaths of Henry the Young King and Geoffrey.
John unsuccessfully attempted a rebellion against the royal administrators of his brother, King Richard, whilst Richard was participating in the Third Crusade, but he was proclaimed king after Richard died in 1199.
He came to an agreement with Philip II of France to recognise John's possession of the continental Angevin lands at the peace treaty of Le Goulet in 1200.
When war with France broke out again in 1202, John achieved early victories, but shortages of military resources and his treatment of Norman, Breton, and Anjou nobles resulted in the collapse of his empire in northern France in 1204.
He spent much of the next decade attempting to regain these lands, raising huge revenues, reforming his armed forces and rebuilding continental alliances.
His judicial reforms had a lasting effect on the English common law system, as well as providing an additional source of revenue.
An argument with Pope Innocent III led to John's excommunication in 1209, a dispute he finally settled in 1213.
John's attempt to defeat Philip in 1214 failed due to the French victory over John's allies at the battle of Bouvines.
When he returned to England, John faced a rebellion by many of his barons, who were unhappy with his fiscal policies and his treatment of many of England's most powerful nobles.
Although both John and the barons agreed to the " peace treaty in 1215, neither side complied with its conditions.
Civil war broke out shortly afterwards, with the barons aided by Louis VIII of France.
It soon descended into a stalemate.
John died of dysentery contracted whilst on campaign in eastern England during late 1216; supporters of his son Henry III went on to achieve victory over Louis and the rebel barons the following year.
Contemporary chroniclers were mostly critical of John's performance as king, and his reign has since been the subject of significant debate and periodic revision by historians from the 16th century onwards.
Historian Jim Bradbury has summarised the current historical opinion of John's positive qualities, observing that John is today usually considered a "hard-working administrator, an able man, an able general".
Nonetheless, modern historians agree that he also had many faults as king, including what historian Ralph Turner describes as "distasteful, even dangerous personality traits", such as pettiness, spitefulness, and cruelty.
These negative qualities provided extensive material for fiction writers in the Victorian era, and John remains a recurring character within Western popular culture, primarily as a villain in films and stories depicting the Robin Hood legends.

Question: Why did Richard Of Cornwall's father die?
Answer: dysentery