Boxing is governed by a set of rules that were written under the direction of the marquess of Queensberry, John Sholto Douglas of the old Scottish family. In 1950, an associated press poll rated Jack Dempsey, of Scotch-Irish ancestry, "The greatest fighter of the half century". Max Baer, heavyweight champion of the world from 1934-35, was of German and Scottish parentage. Ken Buchanan used to fight in tartan trunks representing his clan. Buchanan was the lightweight champion of the world in 1970. Jim Watt followed Buchanan as lightweight champion of the world in 1979. Watt insisted on having all of his fights in his native Glasgow.