William V and IV (1735-1756) was King of England, Scotland, and Ireland and Stadtholder of the Netherlands from his father's death in 1749 until his own death in 1756. His great youth at the time of his coronation, and the fact that he died at only 21, allowed the parliament to continue to increase in power. He died without children, and was succeeded by his 8-year-old brother, who became Henry IX.
In 1752, the parliaments of England, Scotland, and the Netherlands passed the Act of Union establishing a United Kingdom of Great Britain and the Netherlands. Ireland remained outside this parliamentary union, though remaining in personal union.
|King of England|
|King of the United Kingdom of Great Britain and the Netherlands|
|King of Scots|
|Stadtholder of the Netherlands|
|King of Ireland|
|Prince of Orange|