There have been two Baronetcies created for people with the surname Delaval.

The Delaval Baronetcy of Seaton in the County of Northumberland was created in the Baronetage of England  on 29 June 1660 for Ralph Delaval, of Seaton. The latter was Member of Parliament for Northumberland and was succeeded by his oldest son. The second Baronet died without male issue and the baronetcy devolved to his younger brother. The third Baronet, 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 Morpeth

Morpeth (UK Parliament constituency)

Morpeth was a borough constituency centred on the town of Morpeth in Northumberland represented in the House of Commons of the Parliament of England until 1707, the Parliament of Great Britain from 1707 to 1800, and then the Parliament of the United Kingdom....

 and Northumberland

Northumberland (UK Parliament constituency)

Northumberland, was a County constituency of the House of Commons of the Parliament of England then of the Parliament of Great Britain from 1707 to 1800 and of the Parliament of the United Kingdom from 1801 to 1832. It was represented by two Members of Parliament.The constituency was split into two...

 experienced financial problems which led to him selling the family estate at Seaton

Seaton Delaval

Seaton Delaval is a village in Northumberland, England, with a population of 4,371. It is the largest of the five villages in Seaton Valley and is the site of Seaton Delaval Hall, the masterpiece completed by Sir John Vanbrugh in 1727....

 to his cousin Admiral George Delaval

George Delaval

-Family:He was of a junior branch of the Delaval family, the son of George Delaval of North Dissington, Northumberland. His father left him a legacy of only £100 but he went on to make a large fortune from his naval and diplomatic career.-Naval career:...

 (1660-1723). The baronetcy was extinct or dormant on his death.

The Delaval Baronetcy of Ford

Ford, Northumberland

Ford is a small village in Northumberland, England, about from Berwick-upon-Tweed. Ford shares a parish with Etal.- History Pre-1513 :Very little is known of the history of the area before the Norman Conquest in the 11th century, but Bronze Age rock carvings in the area suggest that there might...

 in the County of Northumberland

Northumberland

Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

, created in the Baronetage of Great Britain on 1 July 1761, for John Hussey Delaval, great nephew of Admiral George Delaval, merged with the baronies created for him in 1783 and 1786. With his death the baronetcy became extinct.

Baronets Delaval, of Seaton (1660)

• Sir Ralph Delaval, 1st Baronet
  Sir Ralph Delaval, 1st Baronet
  Sir Ralph Delaval, 1st Baronet was an English landowner and politician who sat in the House of Commons at various times between 1659 and 1685....
  
   (1622-1691)
• Sir Ralph Delaval, 2nd Baronet (1649-1696)
• Sir John Delaval, 3rd Baronet
  Sir John Delaval, 3rd Baronet
  Sir John Delaval, 3rd Baronet was an English politician.He was the fifth son of Sir Ralph Delaval, 1st Baronet and his wife Anne Leslie, daughter of the 1st Earl of Leven. Delaval succeeded his older brother Ralph as baronet in 1696.Delaval sat as Member of Parliament for Morpeth from 1701 until...
  
  (1654-1729)