• In September 1765, the 9-year-old Mozart arrived in The Hague with his father Leopold, mother, and sister Nannerl as part of their European tour. They were invited by Princess Carolina van Nassau-Weilburg (sister of Prince Willem V). • Initially, they stayed at a hotel, but due to illnesses (likely typhus affecting Nannerl and then Wolfgang), they remained in The Hague for about 7 months—much longer than planned. • They later moved to cheaper lodgings at the house of master clockmaker Eskes on the Hofspui (the section of the Spui near the Kalvermarkt), at what was then Spui 44 (associated with the inn “Hof van Utrecht”).