[Marengo]

Maurice of Nassau (Dutch: Maurits van Nassau) (14 November 1567 – 23 April 1625), Prince of Orange (1618–1625), son of William the Silent and Princess Anna of Saxony, was born at the castle of Dillenburg. He was named after his maternal grandfather, the Elector Maurice of Saxony.
Maurice never married but was the father of illegitimate children by Margaretha van Mechelen and Anna van de Kelder. He was raised in Dillenburg by his uncle Johan of Nassau (Jan the Old). Together with his cousin Willem Lodewijk he studied in Heidelberg and later with his brother Philip in Leiden where he met Simon Stevin. The States of Holland and Zeeland paid for his studies, as their father had run into financial problems after spending his entire fortune in the early stages of the Dutch revolt.
Only 16 when his father was murdered in Delft in 1584, he soon took over as stadtholder (Stadhouder), though this title was not inheritable (The monarchs of England and France had refused, and there simply was no one else to take the job). He became stadtholder of Holland and Zeeland in 1585, of Guelders, Overijssel and Utrecht in 1590 and of Groningen and Drenthe in 1620 (following the death of Willem Lodewijk, who had been Stadtholder there and in Friesland).
Maurice was preceded as Prince of Orange (not a Dutch title) by his elder half-brother Philip William. However, Philip William was in the custody of Spain, remaining so until 1596, and was thus unable to lead the Dutch cause.

Read the entire wikipedia article here.