Jean-Baptiste d'Ornano

Jean-Baptiste d'Ornano, Marquis de Montlaur [fr] (1581–1626) was a French nobleman and Marshal of France (1626).

He was one of the first to praise Louis XIII for assassinating Concino Concini and regarded him as the true ruler.

[1] It was him who shouted: "Sire, at this hour you are king, for Marshal Ancre is dead," marking his political rise.

In 1626, this led to the Chalais conspiracy when Ornano persuaded Gaston not to follow the intentions of his mother and his brother to marry.

Louis XIII responded by appointing Ornano as marshal of France and then silently arresting him during one of the king's lute concerts at court.