| frederick william | (n) the Elector of Brandenburg who rebuilt his domain after its destruction during the Thirty Years' War (1620-1688), Syn. Great Elector |
| frederick william i | (n) son of Frederick I who became king of Prussia in 1713; reformed and strengthened the Prussian army (1688-1740) |
| frederick william ii | (n) king of Prussia who became involved in a costly war with France (1744-1797) |
| frederick william iii | (n) king of Prussia who became involved in the Napoleonic Wars (1770-1840) |
| frederick william iv | (n) king of Prussia who violently suppressed democratic movements (1795-1865) |
| herschel | (n) English astronomer (son of William Herschel) who extended the catalogue of stars to the southern hemisphere and did pioneering work in photography (1792-1871), Syn. John Herschel, Sir John Herschel, Sir John Frederick William Herschel |
| herschel | (n) English astronomer (born in Germany) who discovered infrared light and who catalogued the stars and discovered the planet Uranus (1738-1822), Syn. William Herschel, Sir William Herschel, Sir Frederick William Herschel |