The Cantacuzino or Cantacuzène family is a Romanian aristocratic family that gave several Princes of Wallachia and Moldavia, descending from a branch of the Byzantine Kantakouzenos family, specifically from the Byzantine Emperor John VI Kantakouzenos (reigned 1347–1354). After the Russo-Ottoman War of 1710–11 a lateral branch of the family settled in Russia, receiving the princely ("Knyaz", as opposed to "Velikij Knyaz") status. In 1944 Prince Ștefan Cantacuzino settled in Sweden, where his descendants form part of the unintroduced nobility of the country.