King Frederick II of Prussia died on August 17, 1786 at the age of 74.
King Frederick II of Denmark died on April 4, 1588 at the age of 53.
King Frederick William II of Prussia died on November 16, 1797 at the age of 53.
King Frederick I of Prussia died on February 25, 1713 at the age of 55.
Too much pot. Smoking & drugs are bad, kids. Do you want to end up like King Ramses II? Tsk, tsk.. Bad examples.