In my posting on John Buchan's Greenmantle I suggested that the model for Sandy Arbuthnot was T. E. Lawrence. It turns out that the character owes more to Aubrey Herbert who, amongst many other things, was Tory MP for Yeovil and (posthumously) Evelyn Waugh's father-in-law. You can read the Wikipedia article about Herbert, and there is a fuller portrait of him in Desmond MacCarthy's introduction to his Mons, ANZAC and Kut: No one understood better the internal and external problems of the Albanians. And if it is asked what Aubrey Herbert most notably achieved during his public career, ...