At the most recent council, the Second Vatican Council, some periti (the plural form) accompanied individual bishops or groups of bishops from various countries.
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Father Joseph Ratzinger, Pope Benedict XVI, served as peritus to Cardinal Josef Frings, Archbishop of Cologne, Germany, while Hans Küng was a peritus for the Council, rather than for an individual Bishop.
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Cardinal Yves Congar, O.P. served as a consultant to the Second Vatican Council upon the invitation of Pope John XXIII, but was hired as personal and expert theologian (peritus) at the council to Bishop Jean-Julien Weber of Strasbourg which allowed him to attend all the general congregations and to take part in the discussions of any conciliar commission to which he was invited by one of its members.
He acted as a peritus (theologian advisor and consultant) during the Vatican Council II Second Vatican Council and was Provincial of the Society of Saint-Sulpice for Canada, Japan and Latin America from 1966 to 1970.
Monsignor Frederick Richard McManus (born February 8, 1923, Lynn, Massachusetts – died November 27, 2005, Boston, Massachusetts) was an American Roman Catholic priest and academic, who served as a peritus on the liturgy at the Second Vatican Council.
The basic modern concept of the journal was created by F. Friedrich Wulf SJ – the editor from 1947 up to 1989 – who took part as a theological consultant in the Second Vatican Council (1962–1965).