| Honorific-Prefix: | The Right Honourable |
| The Earl of Gosford | |
| Honorific-Suffix: | PC |
| Office: | Member of Parliament for Old Leighlin |
| Term Start: | 1783 |
| Term End: | 1791 |
| Predecessor: | Robert Jephson Sir John Blaquiere |
| Birth Name: | Arthur Acheson |
| Death Place: | Bath, England |
| Parents: | Archibald Acheson, 1st Viscount Gosford Mary Richardson |
| Children: | Archibald Acheson, 2nd Earl of Gosford |
| Relations: | Arthur Acheson, 5th Baronet (grandfather) |
Arthur Acheson, 1st Earl of Gosford PC (14 January 1807), known as The Viscount Gosford between 1790 and 1806, was an Irish peer of Scottish descent and politician.[1]
Arthur Acheson was born . He was the eldest son of Archibald Acheson, 1st Viscount Gosford and his wife, the former Mary Richardson.[2]
His paternal grandfather was Sir Arthur Acheson, 5th Baronet, and his maternal grandfather was John Richardson of Rich Hill. His father succeeded to the baronetcy in 1748 upon the death of his father, and was subsequently created Baron Gosford in 1776 and Viscount Gosford in 1785.[3]
Acheson was a Member of Parliament (MP) for Old Leighlin from 1783 until 1791. He served as governor of County Armagh at the time of the Armagh disturbances of 1795 and denounced the Protestant extremists:
Upon the death of his father in 1790, Arthur succeeded to the viscountcy. He was subsequently created Earl of Gosford in February 1806.[4] [5]
In 1774, Gosford married Millicent Pole, daughter of Lieutenant-General Edward Pole (who was descended from the Poles of Radbourne Hall in Derbyshire) and Olivia (née Walsh) Pole (a daughter and heiress of John Walsh of Ballykilcavan). Their children were:[6]
They were also the parents of two more sons, Arthur Acheson and Arthur Pole Acheson, who both died young. Lord Gosford died on 14 January 1807. His widow, Lady Gosford, wife died on 1 November 1825.[10]