Career
He comes from a family of Champagne in Reims. Bernardin who became bishop of Rennes in 1558 and abbot of Saint Lawrence Auxerrois
Jacques, his heir, who become an outstanding diplomat
Marie, who married in 1542 Claude de l"Aubespine, Lord of Hauterives, Baron of Chateauneuf-sur-Cher and Secretary of State. Jean
Jeanne, who married Jacques Bourdin Secretary of State
In 1540 he bought from Jean Courtois Breuilhamenon the lordship of the lands in Berry.
Guillaume died in 1558.
He began his career with the office of clerk of aid and gabelles in Berry. On 27 July 1518, King Francis I of France appointed him of notary clerk of the king"s chamber, where he distinguished himself by writing in February 1522 an ordinance dealing with the dispersal of territorial soldiers.
On 22 August 1530, the king appointed him secretary, of royal finances and entrusted the office of Secretary of royal finances and acts Royal two years later. In May 1535, he left with the Royal Admiral Philippe Chabot to Calais to negotiate with England.
In 1537, he was sent by the king in Leucate to negotiate peace with the Emperor Charles V and accompanied the king during his trip to Piedmont in 1538.
On 29 September 1542, he was made Clerk of the Order of Saint Michael. In 1546, he negotiated, concluded and signed the Treaty of Ardres with Henry VIII of England, signed on 7 June.