The region became part of the Kingdom of Prussia with the coronation of King Frederick I of Prussia in 1701 in Königsberg. Masuria became part of a newly created administrative province of East Prussia upon its creation in 1773. The name "Masuria" began to be used officially after new administrative reforms in Prussia after 1818. Masurians referred to themselves during that period as "Polish Prussians" or as "Staroprusaki" (Old Prussians) During the Napoleonic Wars and Polish national liberation struggles, in 1807, several towns of northern and eastern Masuria were taken over by Polish troops under the command of generals Jan Henryk Dąbrowski and Józef Zajączek. Some Masurians showed considerable support for the Polish uprising in 1831, and maintained many contacts with Russian-held areas of Poland beyond the border of Prussia, the areas being connected by common culture and language; before the uprising people visited each other's country fairs and much trade took place, with smuggling also widespread. Nevertheless, their Lutheran belief and a traditional adherence to the Prussian royal family kept Masurians and Poles separated. Some early writers about Masurians - like Max Toeppen - postulated Masurians in general as mediators between German and Slav cultures.