Jean Le Mercier, who died 3 July 1397, Lord of Nouvion, was a French politician, advisor to kings Charles V and Charles VI.
In 1358 he was notary and secretary to the king,[1] soon becoming one of the most trusted advisors of Charles V. Appointed treasurer of wars in 1369,[1] he performed on behalf of Charles V several diplomatic missions of financial interest.
[1] He was sent to Normandy in 1378 with the task of strengthening the fortifications, negotiating the surrender of those controlled by the party in Navarre, and also to proceed to the arming of a fleet.
In 1383 he became steward of the king, assuming his post as general of aid again.
Having amassed an enormous fortune, he became very unpopular and accused of speculation.