Samblançay,[1] or Semblançay, is a French noble family of Touraine, originally from the merchant class[2] and taking their name from a village in Indre-et-Loire.
The founder of the family was Jean de Beaune (d. c. 1489), treasurer of Louis XI, who narrowly escaped death for conspiracy under Charles VIII.
Convicted of peculation in connection with the supplies for the army in Italy, Jacques de Beaune was executed at Montfaucon on 9 August 1527.
His efforts at pacification during the wars of religion culminated in the conversion of Henry IV, and it was he who presided at the ceremony of the king's abjuration of Protestantism on 25 July 1593.
The duc de Guise was killed as he left her apartments in the early morning of Christmas Day 1588.