Marquess of Normanby was a title in the peerage of England and later a separate title in the peerage of the United Kingdom.

The first title was created in the peerage of England in 1694 for John Sheffield, who was awarded a higher title a few years later. All of his titles became extinct with the death of his son. The second title was created in the peerage of the United Kingdom for Constantine Henry Phipps on June 25, 1838. He was the step-grandson of the aforementioned John Sheffield, 1st Duke of Buckingham and Normanby.

The subsidiary titles of the present Marquess of Normanby are: Earl of Mulgrave (created 1812), Viscount Normanby (1812) and Baron Mulgrave (1767 and 1794). The Barony of Mulgrave was first created in the Peerage of Ireland, and then again in the Peerage of Great Britain. The remaining titles are in the Peerage of the United Kingdom.

Barons Sheffield (1547)

• Edmund Sheffield, 1st Baron Sheffield (1521-1549)
• John Sheffield, 2nd Baron Sheffield (c. 1538-1568)
• Edmund Sheffield, 3rd Baron Sheffield (c. 1564-1646) (became Earl of Mulgrave in 1626)

Earls of Mulgrave, First Creation (1626)

• Edmund Sheffield, 1st Earl of Mulgrave (c. 1564-1646)
• Edmund Sheffield, 2nd Earl of Mulgrave (1611-1658)
• John Sheffield, 3rd Earl of Mulgrave (1647-1721) (became Marquess of Normanby in 1694; became Duke of Buckingham and Normanby in 1703)

Dukes of Buckingham and Normanby (1703)

• John Sheffield, 1st Duke of Buckingham and Normanby (1648-1721)
• Edmund Sheffield, 2nd Duke of Buckingham and Normanby (1716-1735)

Barons Mulgrave, First Creation (1767)

• Constantine Phipps, 1st Baron Mulgrave (1722-1775)
• Constantine John Phipps, 2nd Baron Mulgrave (1744-1792) (created Baron Mulgrave [GB] in 1790, that title extinct at his death)
• Henry Phipps, 3rd Baron Mulgrave (1755-1831) (created Baron Mulgrave [GB] in 1794 and Earl of Mulgrave [UK] in 1812)

Earls of Mulgrave, Second Creation (1812)

• Henry Phipps, 1st Earl of Mulgrave (1755-1831)
• Constantine Henry Phipps, 2nd Earl of Mulgrave (1797-1863) (became Marquess of Normanby in 1838)

Marquesses of Normanby, Second Creation (1838)

• Constantine Henry Phipps, 1st Marquess of Normanby (1797-1863)
• George Augustus Constantine Phipps, 2nd Marquess of Normanby (1819-1890)
• Constantine Charles Henry Phipps, 3rd Marquess of Normanby (1846-1932)
• Oswald Constantine John Phipps, 4th Marquess of Normanby (1912-1994)
• Constantine Edmund Walter Phipps, 5th Marquess of Normanby (b. 1954)

Reference

• Directory of Royal Genealogical Data, Brian Tompsett, as of March 1, 2003; [1]
• BUCKINGHAM AND NORMANBY, JOHN SHEFFIELD, 1ST DUKE OF (1648—1721), 1911 Encyclopedia Britannica; [2]