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 Augustus of Prussia from 1805 until 1817. Their union produced four children. She was ennobled as Baroness von Waldenburg. His second extramarital relationship was with Auguste Arend, later ennobled as Baroness von Prillwitz. It began in 1818, lasted until her death in 1834 and produced seven children. Shortly after Baroness Von Prillwitz's death he began a relationship with Emilie von Ostrowska who was a Polish noblewoman. They had a daughter Charlotte who was five when her father died and raised by her fathers Jewish tailor. Prince Augustus of Prussia Prince Friedrich Wilhelm Heinrich August of Prussia (19 September 1779 - 19 July 1843),