Robert Vaughan was a Welsh politician who sat in the House of Commons

House of Commons of England

The House of Commons of England was the lower house of the Parliament of England from its development in the 14th century to the union of England and Scotland in 1707, when it was replaced by the House of Commons of Great Britain...

 from 1628 to 1629.

Vaughan was the son of William Vaughan of Plas-hen and his wife Ann who was heiress of Corsygedol. In 1628, he was elected Member of Parliament

Member of Parliament

A Member of Parliament is a representative of the voters to a :parliament. In many countries with bicameral parliaments, the term applies specifically to members of the lower house, as upper houses often have a different title, such as senate, and thus also have different titles for its members,...

 for Merioneth

Merioneth (UK Parliament constituency)

Merioneth, sometimes called Merionethshire, was a constituency in North Wales established in 1542, which returned one Member of Parliament to the House of Commons of the English Parliament, and later to the Parliament of Great Britain and of the United Kingdom...

and sat until 1629 when King Charles decided to rule without parliament for eleven years. Vaughan was so corpulent and bulky that it was necessary to open the large door of the House of Commons to let him in "which was seldom opened except when the Usher of the Black Rod summoned the members to appear before the House of Lords". When the door was opened the Lords used to whisper that Black Rod or the Welsh Mayor was coming." .

Vaughan died of obesity at Corsygedol aged about 30.

Vaughan married Elizabeth Owen daughter of Sir John Owen of Clenenau and Brogyntyn,