WI: Edward VI survives to adulthood.
Henry VIII Tudor, King of England, France, and Ireland (b. 1491, d. 1547) m. Catherine of Aragon (b. 1485, d. 1536) in 1509, had issue (a); Anne Boleyn (b. 1501, d. 1536) in 1533, had issue (b); Jane Seymour (b. 1508, d. 1537) in 1536, had issue (c); Anne of Cleves (b. 1515, d. 1557) in 1540, ann. 1540, had no issue (d); Catherine Howard (b. 1523, d. 1542) in 1540, had no issue (e); Catherine Parr (b. 1512, d. 1548) in 1543, had no issue (f); also had illegitimate issue by Elizabeth Blount (b. c. 1498-1502, d. c. 1540) (g)
1a) Stillborn daughter (b. and d. 1510)
2a) Henry, Duke of Cornwall (b. and d. 1511)
3a) Stillborn son (b. and d. 1513)
4a) Stillborn son (b. and d. 1514)
5a) Mary (b. 1516, d. 1557) [1]
6a) Stillborn daughter (b. and d. 1518)
7g) Henry FitzRoy, Duke of Richmond and Somerset (b. 1519, d. 1536) m. Mary Howard (b. 1519, d. 1557) in 1533, had no issue
8b) Elizabeth (b. 1533, d. 1603) m. Johan III, King of Sweden (b. 1537, d. 1592) [2] in 1562, had issue
1) Gustav II, King of Sweden (b. 1563, d. ?) m. Maria of the Palatinate (b. 1561, d. 1589) in 1581, had issue (a); Christina of Holstein-Gottorp (b. 1573, d. ?) in 1592, had issue (b)
2) Margareta (b. 1564, d. ?) m. Frederick IV Philip, Elector Palatine (b. 1567, d. ?) in 1581, had issue
3) Anna (b. 1566, d. ?) m. Frederick II, Duke of Holstein-Gottorp (b. 1568, d. ?) in 1587, had issue
4) Johan, Duke of Småland (b. 1569, d. 1578)
5) Elisabet (b. 1572, d. 1579)
9c) Edward VI, King of England, France, and Ireland (b. 1537, d. 1589) m. Elisabeth of Valois (b. 1545, d. 1607) in 1559, had issue
1) Jane, Queen of England, France, and Ireland (b. 1562, d. 1622) m. Edward Dudley, 2nd Duke of Suffolk (b. 1556, d. ?) [3] in 1583, had issue
2) Elizabeth (b. 1564, d. 1617) m. James VI, King of Scotland, Archduke of Austria, Infante of Spain (b. 1562, d. ?) [4] in 1580, had issue
3) Henry, Prince of Wales (b. 1566, d. 1581)
4) Edward Charles, Duke of York (b. 1567, d. 1573) [5]
5) Katherine (b. 1572, d. 1637; twin of Margaret)
6) Margaret (b. 1572, d. 1599; twin of Katherine) m. John III, King of Navarre (b. 1576, d. ?) [6] in 1592, had issue
[1] Once Edward comes of age, Mary avoids his court almost entirely. She dies of cancer as IOTL, though a little sooner.
[2] Elizabeth is initially betrothed to Eric XIV in 1561. He visits England that year with the intention of wedding her but news reaches him of his father's death and he is forced to leave before that can happen. Unfortunately, the boat conveying Eric back to Sweden is hit by storms and sunk, taking him with it. Johan thus ascends as King of Sweden in 1561 and makes preparations to replace his brother as Elizabeth's intended husband.
[3] The son of Guildford Dudley, 1st Duke of Suffolk and Lady Jane Grey.
[4] The son of Mary, Queen of Scots and Philip II of Spain.
[5] Named after his maternal uncle, King Charles IX of France.
[6] The son of Henri, Duke of Anjou (OTL Henri III of France) and Catherine II, Queen of Navarre (her older brother dies young here).