Complex sentence: Ultimately this could never be realised as Karl Borwin died in 1908 and Adolf Friedrich was subsequently reported to be engaged to various European princesses with Princess Viktoria Luise of Prussia the only daughter of the German Emperor William II and Princess Patricia of Connaught both mentioned.
Split into simpler sentences: Ultimately this could never be realised as Karl Borwin died in 1908. Adolphus Frederick was subsequently reported to be engaged to various European princesses with Princess Viktoria Luise of Prussia the only daughter of the German Emperor William II and Princess Patricia of Connaught both mentioned.