Cecily Neville, Duchess of Warwick
Cecily Neville, Duchess of Warwick, Countess of Worcester( c.1425 – 26 July 1450) was a daughter of Richard Neville, 5th Earl of Salisbury and Alice Montacute, 5th Countess of Salisbury.
Her siblings included Richard Neville, 16th Earl of Warwick; John Neville, 1st Marquess of Montagu; George Neville,( Archbishop of York and Chancellor of England); Katherine Neville, Baroness Hastings; and Alice Neville, Baroness FitzHugh.
She was most likely named after her paternal aunt, Cecily Neville, Duchess of York.
Her first cousins included Anne of York, Duchess of Exeter; Edmund, Earl of Rutland; Elizabeth of York, Duchess of Suffolk; Margaret of York; George Plantagenet, 1st Duke of Clarence; and Kings Edward IV and Richard III.
She first married Henry de Beauchamp, 1st Duke of Warwick, and the only King of the Isle of Wight( as well as of Jersey and Guernsey).
Their only daughter was Lady Anne Beauchamp, who was allowed to succeed as" suo jure" 15th Countess of Warwick.
Upon the death of the 15th Countess, the title was inherited by her paternal aunt, also named Lady Anne.
Lady
Anne married Cecily's brother, Richard Neville, who would become" jure uxoris" 16th Earl of Warwick.
Her second husband was John Tiptoft, 1st Earl of Worcester.
They had no children.
She is buried with her first husband, the Duke of Warwick, in Tewkesbury Abbey.
Anne Yelverton
Anne Yelverton( 1628–1698) was Countess of Manchester and Countess of Halifax.
Anne Beauchamp, 15th Countess of Warwick
Anne Beauchamp, 15th Countess of Warwick( 14 February 1444 – 3 June 1449) was the only child and heiress of the English nobleman Henry Beauchamp, Duke of Warwick.
She died a child aged 5, after which the earldom of Warwick was inherited by her paternal aunt.
The title then passed by marriage to Anne's maternal uncle, Richard Neville, the famous' Kingmaker' of the later Wars of the Roses.
Henry Beauchamp, 1st Duke of Warwick
Henry de Beauchamp, 14th Earl and 1st Duke of Warwick( 22 March 142511 June 1446) was an English nobleman.
He was the son of Richard Beauchamp, 13th Earl of Warwick, and Isabel le Despenser.
In 1434, Henry married Cecily Neville, the eldest daughter of Richard Neville, 5th Earl of Salisbury, and Alice Montagu, Countess of Salisbury.
He became 14th Earl of Warwick on his father's death in 1439.
His boyhood friendship with King Henry VI and his father's military services placed him high in the King's favour, and he was loaded with titles.
In 1444, he was made premier Earl of the realm, and on 14 April 1445, was created Duke of Warwick, and around the same time, granted the Forest of Feckenham.
As Duke of Warwick, he was preceded only by the Duke of Norfolk.
This precedence was disputed by the Duke of Buckingham, whom it displaced.
However, the issue was rendered moot by his death in June, at which time the dukedom expired for lack of heirs- male.
He is said to have been crowned King of the Isle of Wight in 1444 by Henry VI, to place his playmate on a more equal standing with him, but this story is considered unhistorical.
On his death, the earldom was inherited by his two- year- old daughter, Anne( 14433 June 1449)," suo jure" Countess of Warwick.
She, however, died three years later, and there was some question regarding who, if any, of her father's sisters( or their heirs) should succeed.
In the end, his full sister Anne( who was married to Richard Neville, eldest son of Richard Neville, Earl of Salisbury, and brother to Beauchamp's widow) was declared the heir, due to the English common law principle that" possession by the brother makes the sister the heir", which denies relatives of the half- blood from inheriting when full- blood relatives are available to inherit.
The three half- sisters from their father's first marriage contested this decision, but to no avail.
Abhinay Muthoo
Abhinay Muthoo is the Dean of" Warwick in London", a role which will enhance the University of Warwick's presence in the capital.
He is also the Co- Director of the Warwick Policy Lab and a Professor of Economics in the Department of Economics, University of Warwick.
He became the Dean of Warwick in London on 1 August 2016, after eight years as the Head of the Department of Economics at the University of Warwick.
Roger Mortimer, 1st Earl of March
Roger Mortimer, 3rd Baron Mortimer, 1st Earl of March (25 April 128729 November 1330), was an English nobleman and powerful Marcher lord who gained many estates in the Welsh Marches and Ireland following his advantageous marriage to the wealthy heiress Joan de Geneville, 2nd Baroness Geneville.
In November 1316, he was appointed Lord Lieutenant of Ireland.
He was imprisoned in the Tower of London in 1322 for having led the Marcher lords in a revolt against King Edward II in what became known as the Despenser War.
He later escaped to France, where he was joined by Edward's queen consort Isabella, whom he may have taken as his mistress.
After he and Isabella led a successful invasion and rebellion, Edward was deposed; Mortimer allegedly arranged his murder at Berkeley Castle.
For three years, Mortimer was "de facto" ruler of England before being himself overthrown by Edward's eldest son, Edward III.
Accused of assuming royal power and other crimes, Mortimer was executed by hanging at Tyburn.
Anne Russell, Countess of Warwick
Anne Dudley( née Russell), Countess of Warwick( 1548/ 1549 – 9 February 1604) was an English noblewoman, and a lady- in- waiting and close friend of Elizabeth I.
She was the third wife of Ambrose Dudley, 3rd Earl of Warwick.
Agnes Mortimer, Countess of Pembroke
Agnes Mortimer, Countess of Pembroke( 1317 – 25 July 1368) was the wife of Laurence Hastings, 1st Earl of Pembroke.
She was a daughter of Roger Mortimer, 1st Earl of March and Joan de Geneville, Baroness Geneville.
Katherine Mortimer, Countess of Warwick
Katherine Mortimer, Countess of Warwick (1314 – 4 August 1369) was the wife of Thomas de Beauchamp, 11th Earl of Warwick KG, an English peer, and military commander during the Hundred Years War.
She was a daughter and co-heiress of Roger Mortimer, 1st Earl of March and Joan de Geneville, Baroness Geneville.
Sometime before 1355, she became an important figure at the royal court of King Edward III.
Margaret de Beaumont, 7th Countess of Warwick
Margaret de Beaumont, 7th Countess of Warwick or Margaret de Neubourg or Margery de Newburgh( died 3 June 1253) was the daughter of Henry de Beaumont, 5th Earl of Warwick and Margaret D'Oyly.
She was the sister and heiress of Thomas de Beaumont, 6th Earl of Warwick and became the 7th Countess of Warwick in her own right.
She married firstly John Marshal( died October 1242) and, secondly, John de Plessis.
The latter was a great favourite of King Henry III of England who, in 1247, created him the 7th Earl of Warwick and subsequently Count of Warwick.
He died on 20 February 1263.
There was no issue by either of these marriages and so, at Margaret's death, the estates passed to her cousin, William Mauduit, who became the 8th Earl.

Question: What is the cause of death of Katherine Mortimer, Countess Of Warwick's father?
Answer: hanging