Baron Greville, of Clonyn, County Westmeath, was a title in the Peerage of the United Kingdom.

[1] It was created on 15 December 1869 for the Liberal politician Fulke Greville-Nugent, Member of Parliament for Longford from 1852 to 1869.

[2] He was a Liberal politician and served as Private Secretary to Prime Minister William Ewart Gladstone from 1872 to 1873 and as a Lord of the Treasury from 1873 to 1874.

His eldest son the Honourable Ronald Greville represented Bradford East in Parliament but predeceased his father.

His son, Reginald Maugham, was a writer of Africa and British Consul-General in Senegal.