Those three personalities were John van Oldenbarneveldt, Maurice of Nassau and his cousin William Lewis of Nassau, the Stadholder of Friesland. Born in 1547, Oldenbarneveldt, after studying Jurisprudence at Louvain, Bourges and Heidelberg, became a devoted adherent of William the Silent and took part in the defence of Haarlem and of Leyden. His abilities, however, fitted him to take a prominent part as a politician and administrator rather than as a soldier; and his career may be said to have begun by his appointment to the post of Pensionary of Rotterdam in 1576. In this capacity his industry and his talent speedily won for him a commanding position in the Estates of Holland, and he became one of the Prince of Orange’s confidential friends and advisers. In 1586 he was appointed Advocate of Holland in succession to Paul Buys. This office included the duties of legal adviser, secretary and likewise in a sense that of “Speaker” to the Provincial Estates. In addition to all this he was the mouthpiece in the States-General of the deputation representing the Provincial Estates, and exercised in that assembly all the authority attaching to the man who spoke in the name of Holland. At this time of transition, by his predominance alike in his own province of Holland and in the States-General, he was able to secure for the general policy of the Union, especially in the conduct of foreign affairs, a continuity of aim and purpose that enabled the loosely-cemented and mutually jealous confederacy of petty sovereign states to tide-over successfully the critical years which followed the departure of Leicester, and to acquire a sense of national unity.