The title Lord Bellenden, of Broughton, was a lordship of Parliament

Lord of Parliament

A Lord of Parliament was the lowest rank of nobility automatically entitled to attend sessions of the pre-Union Parliament of Scotland. Post-Union, it is a member of the lowest rank of the Peerage of Scotland, ranking below a viscount...

 created in the Peerage of Scotland

Peerage of Scotland

The Peerage of Scotland is the division of the British Peerage for those peers created in the Kingdom of Scotland before 1707. With that year's Act of Union, the Kingdom of Scotland and the Kingdom of England were combined into the Kingdom of Great Britain, and a new Peerage of Great Britain was...

 on 10 June 1661 for William Bellenden

William Bellenden, 1st Lord Bellenden

-Life:Bellenden was born before 1606. He was the son of Sir James Bellenden of Broughton, and Margaret Ker. On 10 June 1661 he was created Lord Bellenden, was made treasurer-depute, and was placed on the privy council of Scotland...

, who was Treasurer-depute of Scotland

Treasurer-depute of Scotland

The Treasurer-depute was a senior post in the pre-Union government of Scotland.Originally a deputy to the Treasurer, the Treasurer-depute emerged as a separate Crown appointment by 1614...

. Shortly before his death, he resigned his peerage in favour of his first cousin twice removed, John Ker (later Bellenden). In 1804, the seventh lord inherited the dukedom of Roxburghe

Duke of Roxburghe

The Duke of Roxburghe is a title in the peerage of Scotland created in 1707 along with the titles Marquess of Bowmont and Cessford, Earl of Kelso and Viscount Broxmouth. John Ker, 5th Earl of Roxburghe became the first holder of these titles...

 from his cousin. On his death in 1805, the dukedom later passed to another cousin and the lordship of Parliament became extinct.

Lords Bellenden (1661–1805)

• William Bellenden, 1st Lord Bellenden
  William Bellenden, 1st Lord Bellenden
  -Life:Bellenden was born before 1606. He was the son of Sir James Bellenden of Broughton, and Margaret Ker. On 10 June 1661 he was created Lord Bellenden, was made treasurer-depute, and was placed on the privy council of Scotland...
  
   (c.1604–1671)
• John Bellenden, 2nd Lord Bellenden (died 1707)
• John Bellenden, 3rd Lord Bellenden (1685–1741)
• Ker Bellenden, 4th Lord Bellenden (1725–1753)
• John Ker Bellenden, 5th Lord Bellenden (1751–1796)
• Robert Bellenden, 6th Lord Bellenden (1734–1797)
• William Bellenden-Ker, 4th Duke of Roxburghe, 7th Lord Bellenden (1728–1805)