Question: Which film has the director who is older than the other, Calling Bulldog Drummond or Convoy (1978 Film)? 
Sentence (from "Sam Peckinpah"): David Samuel Peckinpah( February 21, 1925 – December 28, 1984) was an American film director and screenwriter who achieved prominence following the release of the Western epic" The Wild Bunch"( 1969).
Relevant evidence: Yes