The first creation came in 1760 in favour of Sir Robert Henley, Lord High Chancellor of Great Britain, when he was created Lord Henley, Baron of Grainge, in the County of Southampton.

Their son, the second Baron, assumed the surname of Henley in lieu of Eden and notably published a biography of his maternal grandfather.

The fourth baron Frederick Henley was an educated man who served as JP in Northamptonshire and married Augusta, daughter of Herbert Langham 12th baronet.

[5] His younger son, the sixth Baron, resumed the surname of Eden in 1925, the same year he succeeded his half-brother in the titles.

As of 2019[update] the peerages are held by his grandson, the eighth Baron, who succeeded his father in 1977.