Information: - Lionel of Antwerp, 1st Duke of Clarence, "jure uxoris" 4th Earl of Ulster and 5th Baron of Connaught, KG (29 November 13387 October 1368) was the third son, but the second son to survive infancy, of Edward III of England and Philippa of Hainault. He was named for his birthplace, at Antwerp in the Duchy of Brabant. Prince Lionel was born of a Flemish mother and was a grandson of William I, Count of Hainaut. He grew to be nearly seven feet in height and had an athletic build. - The House of Lancaster was the name of two cadet branches of the royal House of Plantagenet. The first house was created when Henry III of England created the Earldom of Lancasterfrom which the house was namedfor his second son Edmund Crouchback in 1267. Edmund had already been created Earl of Leicester in 1265 and was granted the lands and privileges of Simon de Montfort, 6th Earl of Leicester, after de Montfort's death and attainder at the end of the Second Barons' War. When Edmund's son Thomas, 2nd Earl of Lancaster, inherited his father-in-law's estates and title of Earl of Lincoln he became at a stroke the most powerful nobleman in England, with lands throughout the kingdom and the ability to raise vast private armies to wield power at national and local levels. This brought himand Henry, his younger brotherinto conflict with their cousin Edward II of England, leading to Thomas's execution. Henry inherited Thomas's titles and he and his son, who was also called Henry, gave loyal service to Edward's sonEdward III of England. - Richard of Conisburgh , 3rd Earl of Cambridge ( c. 20 July 1375 -- 5 August 1415 ) was the second son of Edmund of Langley , 1st Duke of York , and Isabella of Castile . At the age of forty , he was beheaded for his part in the Southampton Plot , a conspiracy against King Henry V. He was the father of Richard Plantagenet , 3rd Duke of York , and the grandfather of King Edward IV and King Richard III. - The Southampton Plot of 1415 was a conspiracy to replace King Henry V with Edmund Mortimer, 5th Earl of March. - Edmund de Mortimer, 5th Earl of March and 7th Earl of Ulster (6 November 1391 18 January 1425) was an English nobleman. A great-great-grandson of King Edward III of England, he was heir presumptive to King Richard II of England, his first cousin twice removed, when Richard II was deposed in favour of Henry IV. Edmund Mortimer's claim to the crown was the basis of rebellions and plots against Henry IV and his son Henry V, and was later taken up by the House of York in the Wars of the Roses, though Mortimer himself was an important and loyal vassal of Henry V and Henry VI. Edmund Mortimer was the last Earl of March of the Mortimer family. - Duke of Cambridge, one several royal dukedoms in the United Kingdom, is a hereditary title of specific rank of nobility in the British Royal Family. The title (named after the city of Cambridge in England) is hereditary among male agnatic descendants of the titleholder by primogeniture, and has been conferred upon members of the British royal family several times. The wife of the titleholder is called "Duchess of Cambridge". - The House of York was a cadet branch of the English royal House of Plantagenet. Three of its members became Kings of England in the late 15th century. The House of York was descended in the male line from Edmund of Langley, 1st Duke of York, the fourth surviving son of Edward III, but also represented Edward's senior line, being cognatic descendants of Lionel, Duke of Clarence, Edward III's second surviving son. It is based on these descents that they claimed the English crown. Compared with the House of Lancaster, it had a senior claim to the throne of England according to cognatic primogeniture but junior claim according to the agnatic primogeniture. The reign of this dynasty ended with the death of Richard III of England in 1485. It became extinct in the male line with the death of Edward Plantagenet, 17th Earl of Warwick in 1499. - Edmund of Langley, 1st Duke of York, (5 June 1341 1 August 1402) was the fourth surviving son of King Edward III of England and Philippa of Hainault. Like many medieval English princes, Edmund gained his nickname from his birthplace: Kings Langley Palace in Hertfordshire. He was the founder of the House of York, but it was through the marriage of his younger son, Richard of Conisburgh, 3rd Earl of Cambridge, to Anne de Mortimer, great-granddaughter of Edmund's elder brother Lionel of Antwerp, 1st Duke of Clarence, that the House of York made its claim to the English throne in the Wars of the Roses. The other party in the Wars of the Roses, the incumbent House of Lancaster, was formed from descendants of Edmund's elder brother John of Gaunt, 1st Duke of Lancaster, Edward III's third son. - The title of Earl of Cambridge was created several times in the Peerage of England, and since 1362 the title has been closely associated with the Royal family (see also Duke of Cambridge, Marquess of Cambridge). - John of Gaunt, 1st Duke of Lancaster, (6 March 1340 3 February 1399) was a member of the House of Plantagenet, the third of five surviving sons of King Edward III of England and Philippa of Hainault. He was called "John of Gaunt" because he was born in Ghent, then rendered in English as "Gaunt". When he became unpopular later in life, scurrilous rumours and lampoons circulated that he was actually the son of a Ghent butcher, perhaps because Edward III was not present at the birth. This story always drove him to fury. What is the relationship between 'richard of conisburgh' and 'house of york'?
The answer to this question is:
noble family