In 1577, George de Lalaing, Count of Rennenberg was appointed Stadtholder of Frisia and other provinces. A moderate, trusted by both sides, he tried to reconcile the rebels with the Crown. But in 1580, Rennenburg declared for Spain. The States of Frisia raised troops and took his strongholds of Leeuwarden, Harlingen and Stavoren. Rennenburg was deposed and Frisia became the fifth Lordship to join the rebels' Union of Utrecht. From 1580 onward, all stadtholders were members of the House of Orange-Nassau. With the Peace of Münster in 1648, Frisia became a full member of the independent Dutch Republic, a federation of provincies. In economic and therefore also political importance, Friesland was next in rank to the provinces of Holland and Zeeland.
In 1577, George de Lalaing, Count of Rennenberg was appointed Stadtholder of Frisia and other provinces. A moderate, trusted by both sides, he tried to reconcile the rebels with the Crown. But in 1580, Rennenburg declared for Spain. The States of Frisia raised troops and took his strongholds of Leeuwarden, Harlingen and Stavoren. Rennenburg was deposed and Frisia became the fifth Lordship to join the rebels' Union of Utrecht. From 1580 onward, all stadtholders were members of the House of Orange-Nassau. With the Peace of Münster in 1648, Frisia became a full member of the independent Dutch Republic, a federation of provincies. In economic and therefore also political importance, Friesland was next in rank to the provinces of Holland and Zeeland.