In a similar way, the thrones of the Kingdom of the Netherlands and the Grand Duchy of Luxembourg were separated in 1890, with the succession of Princess Wilhelmina as the first Queen regnant of the Netherlands. As a remnant of Salic law, the office of the reigning monarch of the Netherlands is always formally known as "King" even though her title may be "Queen". Luxembourg passed to the House of Orange-Nassau's distantly-related agnates, the House of Nassau-Weilburg. However, that house, too, faced extinction in the male line less than two decades later. With no other male-line agnates in the remaining branches of the House of Nassau, Grand Duke William IV adopted a semi-Salic law of succession so that he could be succeeded by his daughters.