A Dutch statesman, born at Dort; elected grand pensionary in 1652; like his father, Jacob de Witt, before him, was a declared enemy of the House of Orange, and opposed the Stadtholdership, and for a time he carried the country along with him, but during a war with England his influence declined, the Orange party prevailed, and elected the young Prince of Orange, our William III., Stadtholder. He and his brother Cornelius were murdered at last by the populace (1625-1672).