|This article relies largely or entirely on a single source. (August 2016)|
The first Baron Hervey was created in the Peerage of Ireland in 1620 when Sir William Hervey, 1st Baronet was made Baron Hervey, of Rosse in County Wexford. He had been created Baronet of St. Martin's in the Fields on 31 May 1619.
The second Baron Hervey was created in 1628 when the same William Hervey was also made Baron Hervey, of Kidbrooke, Kent in the Peerage of England. When William Hervey died in 1642, the Irish and English both titles became extinct.
The third Baron Hervey was created in the Peerage of England in 1703 when John Hervey was made Baron Hervey, of Ickworth, Suffolk. John Hervey was a second cousin thrice removed of William Hervey and was later created Earl of Bristol.
Baron Hervey (1620/1628)
- William Hervey, 1st Baron Hervey (died 1642)