[3] He attended the schismatic Conciliabulum of Pisa in 1511, no doubt on the command of King Louis XII of France.

[7] On 23 May 1526[8] Bishop de Givry presided at a meeting of the Estates of the Mâconnais; this was the first time that the Bailly of Macon did not preside at a meeting of the Estates, the privilege being given by the Letters of Convocation on this occasion to Bishop de Longuy personally.

[10] In 1527 Claude de Longwy served as Vicar General of Archbishop François de Rohan of Lyon in the council held in Lyon to raise money for the ransom of King Francis I, who was a prisoner of Charles V in Madrid.

[20] He was created cardinal-priest in the fourteenth Consistory for the promotion of cardinals, held by Pope Clement VII in Marseille on 7 November 1533, shortly after the marriage of his niece, Catherine de' Medici, to Prince Henri, the future king.

On 10 November Longwy was assigned the titular church of S. Agnese in Agone.

He did not, however, attend the Conclave of 11–12 October 1534, in which Cardinal Alessandro Farnese was elected Pope Paul III.

[27] He was buried in the Cathedral of Langres on the right side of the main altar, in a tomb which he had constructed for himself while still living.