Original: ISBN 0548323305 ( William Frederick Louis , ) ( March 22 1797 -- March 9 1888 ) of the House of Hohenzollern was the King of Prussia ( January 2 1861 -- March 9 1888 ) and the first German Emperor ( 18 January 1871 -- March 9 1888 ) .
Simplified: Wilhelm I of the family of the Hohenzollern , was a king of Prussia ( January 2 , 1861 -- 9 March 1888 ) and the first German Emperor ( 18 January 1871 -- 9 March 1888 ) .