| 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) |