 Many graduates of service under Maurice, such as his nephew, the Marshal Turenne, or his disciples such as Gustavus Adolphus of Sweden, applied the Mauritian reforms to great effect in the remainder of the 17th century.Maurice started out as the protégé of Landsadvocaat (Land's Advocate, i.e.secretary to the nobility of Holland and legal counsel to the States of Holland, but functioning as de facto chief minister of Holland and the States-General) Johan van Oldenbarnevelt, but gradually tensions rose between these two men.