Herbert Samuel, 1st Viscount Samuel

Became the first Jew to serve in a British Cabinet, and in 1920 was appointed the first High Commissioner for Mandatory Palestine, where he administered the territory during the early, formative years of the British Mandate. Within the Cabinet he pushed for British support of Zionism, authoring a 1915 memorandum, The Future of Palestine, that helped shape policy years before the Balfour Declaration. He later led the Liberal Party through the 1930s and served as Home Secretary.