…January 1612 – 13 July 1640) was count of Nassau-Dietz and Stadtholder of Friesland, Groningen and Drenthe. He was born in Arnhem, the eldest son of Ernst Casimir of Nassau-Dietz and Sophia Hedwig of Brunswick-Lüneburg, and, like his father, died in battle. Henry Casimir was christened at Arnhem. The English representative…