Title: Henry IV of England
Content:  Henry had four sons from his first marriage, which was undoubtedly a clinching factor in his acceptability for the throne. By contrast, Richard II had no children and Richard's heir-presumptive Edmund Mortimer was only seven years old. The only two of Henry's six children who produced legitimate children to survive to adulthood were Henry V and Blanche, whose son, Rupert, was the heir to the Electorate of the Palatinate until his death at 20. All three of his other sons produced illegitimate children. Henry IV's male Lancaster line ended in 1471 during the War of the Roses, between the Lancastrians and the Yorkists, with the deaths of his grandson Henry VI and Henry VI's son Edward, Prince of Wales.
Title: Children of Henry VIII
Content:  Henry VIII of England had several children. The best known children are the three legitimate offspring who survived infancy and would succeed him as monarchs of England successively, Edward VI, Mary I and Elizabeth I. His first two wives, Catherine of Aragon and Anne Boleyn, had several pregnancies that ended in stillbirth, miscarriage, or death in infancy. Henry acknowledged one illegitimate child, Henry FitzRoy, as his own, but is suspected to have fathered several illegitimate children by different mistresses. The number and identity of these is a matter of historical debate. There are many theories about whether Henry VIII had fertility difficulties. His last three wives, Anne of Cleves, Catherine Howard and Catherine Parr are not known to have conceived by him, although Parr conceived in her next marriage. None of Henry's acknowledged children (legitimate or otherwise) had children of their own, leaving him with no direct descendants after the death of Elizabeth in 1603.
Title: Henry VII of England
Content: Arthur (19 September 1486 – 2 April 1502), Prince of Wales, heir apparent from birth to death ; Margaret (28 November 1489 – 18 October 1541), Queen of Scotland as the wife of James IV and regent for their son James V ; Henry VIII (28 June 1491 – 28 January 1547), Henry VII's successor ; Elizabeth (2 July 1492 – 14 September 1495) ; Mary (18 March 1496 – 25 June 1533), Queen of France as the wife of Louis XII ; Edmund (21 February 1499 – 19 June 1500), styled Duke of Somerset but never formally created a peer ; Katherine (2 February 1503 – 10 February 1503) Henry VII and Elizabeth had seven children: Sir Roland de Velville (or Veleville) was knighted in 1497 and was Constable of Beaumaris Castle. He is sometimes presented as the clear "illegitimate issue" of Henry VII of England by "a Breton lady whose name is not known". The possibility this was Henry's illegitimate son is baseless.
Title: Wives of Henry VIII
Content:  Boleyn, and Jane Seymour each gave him one child who survived infancy: two daughters and one son. All three of these children eventually ascended to the throne as King Edward VI, Queen Mary I, and Queen Elizabeth I. Catherine Howard and Anne Boleyn were first cousins and were both beheaded. Jane Seymour was second cousin to both Anne Boleyn and Catherine Howard. Several of Henry's wives worked in service to another wife, typically as a lady-in-waiting: Anne Boleyn served Catherine of Aragon, Jane Seymour served both Catherine of Aragon and Anne Boleyn, and Catherine Howard served Anne of Cleves.
Title: Henry V of England
Content:  In 1420 Henry V married Catherine of Valois, daughter of Charles VI of France and younger sister of the widow of Richard II, Isabella of Valois (who died several years after her husband). Her dowry, upon the agreement between the two kingdoms, was 600,000 crowns. Together the couple had one child, Henry. Upon Henry V's death, the infant prince became King Henry VI of England.
Title: English and British royal mistress
Content:  Henry VIII's three children followed him of the throne, but none of them appears to have had a lover. His son Edward VI died before he was sixteen, and was followed by his two sisters Mary I of England and Elizabeth I of England. Elizabeth I's status as a 'Virgin Queen' was an important part of her public image. Although she clearly had favourites, there is no clear evidence that any of these was a lover.
Title: Henry VI of England
Content:  Henry was the only child and heir of King Henry V. He was born on 6 December 1421 at Windsor Castle. He succeeded to the throne as King of England at the age of nine months on 1 September 1422, the day after his father's death; he remains the youngest person ever to succeed to the English throne. On 21 October 1422, in accordance with the Treaty of Troyes of 1420, he became titular King of France upon his grandfather Charles VI's death. His mother, the 20-year-old Catherine of Valois, was viewed with considerable suspicion by English nobles as Charles VI's daughter. She was prevented from playing a full role in her 
Title: Henry I of England
Content:  Henry had a number of illegitimate children by various mistresses.
Title: Henry II of England
Content:  older sons in the Great Revolt of 1173–74. Probable explanations include Henry's persistent interference in Aquitaine, his recognition of Raymond of Toulouse in 1173, or his harsh temper. He had several long-term mistresses, including Annabel de Balliol and Rosamund Clifford. Henry had eight legitimate children by Eleanor, five sons—William, the Young Henry, Richard, Geoffrey and John, and three daughters, Matilda, Eleanor and Joan. He also had several illegitimate children; amongst the most prominent of these were Geoffrey (later Archbishop of York) and William (later Earl of Salisbury). Henry was expected to provide for the future of his legitimate children, either through granting 
Title: Revolt of 1173–1174
Content:   King Henry II had been ruling England, Normandy, and Anjou since 1154, while his wife Queen Eleanor ruled the vast territory of Aquitaine since 1137. In 1173 Henry had four legitimate sons (from oldest to youngest): Henry, called the "Young King", Richard (later called "the Lionheart"), Geoffrey, and John ("Lackland"), all of whom stood to inherit some or all of these possessions. Henry also had an illegitimate son, Geoffrey, born probably before the eldest of the legitimate children. By this time, Henry the Young King was 18 years old and praised for his good looks and charm. He had been long-married to the daughter of Louis VII of France, the former husband of Eleanor (Henry the Young King's mother). Henry the Young King kept a large and 

Question: who were king henry vii children?
Answer: Arthur, Prince of Wales.