Question:
Which employer did Patrick du Val work for in Jun, 1953?

Context:
 Patrick du Val works for Trinity College from Jan, 1930 to Jan, 1933. 
 Patrick du Val works for Istanbul University from Jan, 1970 to Jan, 1973. 
 Patrick du Val works for Victoria University of Manchester from Jan, 1936 to Jan, 1941. 
 Patrick du Val works for University of Georgia from Jan, 1949 to Jan, 1952. 
 Patrick du Val works for University College London from Jan, 1954 to Jan, 1970. 
 Patrick du Val works for University of Bristol from Jan, 1952 to Jan, 1954.

Answer:
University of Bristol