Robert William Seton-Watson (London, 20 August 1879 – Skye, 25 July 1951), commonly referred to as R.
W.
Seton-Watson and also known by the pseudonym Scotus Viator, was a British political activist and historian who played an active role in encouraging the breakup of the Austro-Hungarian Empire and the emergence of Czechoslovakia and Yugoslavia during and after World War I.He was the father of two eminent historians, Hugh, who specialised in nineteenth-century Russian history, and Christopher, who worked on nineteenth-century Italy.