Christian V of Denmark
However, only George William and Christian V of Denmark (whose mother was George William's own sister) engaged militarily on this question. An accord was soon reached between them, and on 9 October 1693 they agreed (in the Hamburg Comparison, or "Hamburger Vergleich") that George William - who now "de facto" held most of Saxe-Lauenburg - would retain the duchy in a personal union.