When was the Swiss Catholic priest which was among those that established the Concilium journal born? 
Concilium (journal):  The journal was established by Anton van den Boogaard, Paul Brand, Yves Congar, Hans Küng, Johann Baptist Metz, Karl Rahner, and Edward Schillebeeckx. Hans Küng: Hans Küng (] ; born 19 March 1928) is a Swiss Catholic priest, theologian, and author.
19 March 1928