thumb|Coat of Arms of the house of Constant
Constant de Rebecque is an old noble family which originated in Aire, in the French region of Artois. It takes its name from Rebecques in Artois, which the family received as a barony in 1213. After having converted to Protestantism and sided with Henri IV as high ranking officers during the French Wars of Religion, most of the family fled France for Switzerland.
Family tradition dictated, however, that many members of the house were officers in the French Royal Lifeguard, the Cent Suisses, with the last one to do so being Jean Victor de Constant Rebecque.
The family have, since its move to Switzerland, branched out and naturalised in other European countries, such as Sweden, Norway, the Netherlands and possibly Ireland.
After the French Revolution, a few family members fled to Sweden to avoid prosecution. Later some family moved to Sarpsborg, Norway, and gave birth to Gustav de Flon. Members of the family switched surnames to “De Flon”" to hide their traces to avoid prosecution.
Members
- Samuel Constant de Rebecque
- Benjamin Constant
- Jean Victor de Constant Rebecque
- David-Louis Constant de Rebecque
- Jean d'Estournelles de Constant
- Paul-Henri-Benjamin d'Estournelles de Constant
- Samuel Constant de Rebecque
Claimed titles
- Marquis de Rebecque
- Baron de Constant
- Baron de Clarcque