Sir Arthur Sackville Trevor Griffith-Boscawen PC (18 October 1865 – 1 June 1946) was a British politician in the Conservative Party whose career was cut short by losing a string of Parliamentary elections.

[1] Sir Arthur was born at Trevalyn Hall, Denbighshire, into a distinguished family of Welsh, Cornish, and Scottish lineage.

His father, Captain Boscawen Trevor Griffith, served with the 23rd Welsh Fusiliers and saw action during the Crimean War; he was also chairman of the Denbighshire Court of Quarter Sessions for many years.

[3] Salisbury, whom he accused of ignoring 90% of MPs, appointed him private secretary to Chancellor of the Exchequer Michael Hicks-Beach in 1895, a job he held before becoming Parliamentary Charity Commissioner in 1900, serving until 1905.

The choice of Milner, a brilliant Oxford scholar, was universally acclaimed in parliament as a shrewd option; the candidate was warmly praised for his courage in coming forward during the Jameson Raid crisis.

In 1921, he was appointed to the Lloyd George Coalition Government as Minister of Agriculture but under the law at the time he was required to automatically stand for re-election to the House of Commons.

In March 1923 he sought to re-enter the House of Commons in a by-election at Mitcham, but was defeated by the future Labour Cabinet Minister, James Chuter Ede.