Prince Henry of Prussia (1862–1929) became the club's patron. Henry was interested in motor cars as well and supposedly invented a windshield wiper and, according to other sources, the car horn. In his honor, the "Prinz-Heinrich-Fahrt" (Prince Heinrich Tour) was established in 1908, like the earlier Kaiserpreis a precursor to the German Grand Prix. Henry and his brother William gave patronage to the Kaiserlicher Automobilclub (Imperial Automobile Club). Henry also was an early proponent of introducing submarines and airplanes. He had merchant ships converted into seaplane tenders for operations in the Baltic Sea. Henry respected his brother, but this attitude was not returned in the
Prince George of Prussia House of Hohenzollern. After his death his body was brought to the castle Rheinstein, which he had inherited in 1863 with his only brother Prince Alexander and for which he always cherished a predilection; on 9 May 1902 he was buried in the chapel of the castle. In 1906 the newly established state school as Düsseldorf Royal Prince Georg-Gymnasium was named in his honor. Under the pseudonyms George Conrad and Gunther von Freiberg, Prince George wrote and published many poems and plays: Prince George of Prussia Prince George of Prussia (Frederick William George Ernest; 12 February 1826, Düsseldorf – 2