Lord Milner KG was highly respected. He was mainly involved in running South Africa about the time of the Boer War. He was involved somewhat with the British position regarding the Bolshevik Revolution which is why he is mentioned by Antony Sutton in Wall Street and the Bolshevik Revolution, which tells us who was pulling the strings in 1917.
Lord Milner was important in the War Cabinet during the First World War, signing the Versailles Treaty. He was very influential in South Africa and would have colluded with Cecil Rhodes
Alfred Milner, 1st Viscount Milner
Alfred Milner, 1st Viscount Milner KG, GCB, GCMG, PC (23 March 1854—13 May 1925) was a British statesman and colonial administrator who played an influential leadership role in the formulation of foreign and domestic policy between the mid-1890s and early 1920s. He was also the key British Empire figure in the events leading up to and following the Boer War of 1898–1902 and, while serving as High Commissioner, is additionally noted for mentoring a gathering of young members of the South African Civil Service, informally known as Milner's Kindergarten who, in some cases, themselves became important figures in administering the British Empire. In the later part of his life, from December 1916 to November 1918, he was second only to Prime Minister David Lloyd George in the decision-making process guiding Britain through the crucial period leading to the end of World War I.
He was an important man in important times. Whether he was a good man is a very different matter.