1902 – Born in Liège on the 15th of July.
1926 – He studied law at the University of Liège, where he obtained a PhD.
1935 – He joined the Liberal party and was elected city councillor of Liège.
1939 – He won a seat in the Chamber of Representatives.
1940 – Mobilized as reserve officer, he was captured by the Germans and spent the rest of the war in captivity.
1947 – He promoted a bill on the organization of a federal state.
1949-1950 – Rey was Minister of Reconstruction.
1954 – Minister of Economy.
1958 – Member of the Commission of the CEE, responsible for external relations.
1964 – He played an important role in the negotiations of the Kennedy Round.
1967 – He succeeded Walter Hallstein as President of the European Commission.
1968 – He oversaw the completion of the customs union.
1969 – He also played an important role the Summit of The Hague.
– Rey was chairman of the board of the College of Europe in Brugge.
1974 – He presided the over European Movement and was member of the Jean Monnet Foundation for Europe.
1979 – He became member of the first European Parliament elected by universal suffrage.
1983 – Died on the 19th of May in his native city Liège.