Roy Harris Jenkins, Baron Jenkins of Hillhead OM PC was a Welsh politician. Once prominent as a Labour Member of Parliament (MP) and government minister in the 1960s and 1970s, he became the first (and so far only) British President of the European Commission (1977-81) and one of the four principal founders of the Social Democratic Party (SDP) in 1981. He was also a distinguished writer, especially of biographies.
Outstanding memoirs: elegant, intellligent, waspish, insightful, and a lot of fun for the most part. (The section about Jenkins' time as president of the European Commission makes it clear he didn't enjoy it). You don't get much about his personal life but he clearly sees himself as a man of power and an author of repute, and reading this you understand why.