Frederick William was a common name for German royalty throughout history. There are numerous synonyms for this name that were used by different monarchs. For example, Frederick II was also known as Frederick the Great, while Frederick III was known as Friedrich Wilhelm. Other synonyms for this name include Friedrich Wilhelm I, Wilhelm IV, and Friedrich I. These names have been used by various kings, princes, and other members of the royal family throughout history. Each name has its own unique history and significance, and they all contribute to the rich cultural heritage of Germany. Whether you're a history buff or just curious about the names of German royalty, these synonyms for Frederick William are sure to pique your interest.