Frederick I of Nuremberg
Frederick I (c. 1139–1201), born Frederick III of Zollern, was a younger son of Count Frederick II of Zollern and the first Hohenzollern to hold Nuremberg. From 1171 he was a partisan of the Hohenstaufen, serving Emperor Frederick Barbarossa, including the 1180 campaign against Henry the Lion.
Around 1184 he married Sophie of Raabs, heiress of the Nuremberg burgraviate, and Henry VI enfeoffed him with it around 1191. He founded the Franconian line of the Hohenzollern; his sons Conrad I and Frederick IV took the Franconian and Swabian inheritances.