Charles III de Croÿ

Charles III de Croÿ (1 July 1560 – 12 January 1612) was Seigneur de Croÿ, 4th Duke of Aarschot, 5th Prince of Chimay and 5th Count of Beaumont. He played an important role on both sides of the Dutch Revolt. He was an avid collector of art and coins. His favourite residences were the Château de Beaumont and Heverlee castle, where he housed his collections and created beautiful gardens.

Life He was the eldest son of Philippe III de Croÿ, Prince of Chimay, Duke of Aarschot, and Jeanne of Halewijn.

His military career began in 1577 as lieutenant of his father's regiment of Walloon infantry. He married Marie of Brimeu, widow of Lancelot of Berlaymont, on 3 September 1580. She came from a rich Calvinist family in Picardy and was ten years older than her young husband. Her influence over Charles was so great that he abandoned his Catholic faith and his loyalty to the King of Spain. In 1583 he became stadtholder of Flanders for the Protestant insurgents. He was not able to stop the advance of Alexander Farnese and decided to reconcile with Spain in March 1584.

In 1584 he separated from his wife Marie of Brimeu and in 1585 he returned to the Catholic faith and loyalty to the Spanish Crown. Later that year, he handed over Bruges to the Spanish and in 1585 he did the same with Ghent. Over the next few years he fought alongside Farnese and was present at the Sieges of Grave, Venlo, Neuss and Sluis. His most important victory was the taking of Bonn on 13 September 1588. It contained 64 plates reproducing the Roman coin collection of Charles.