Otto Magnus von Stackelberg
...that Otto Magnus von Stackelberg, Russian ambassador to Poland, can be considered an unofficial but de facto ruler of Poland?
...that <b id="mwDNc"><a href="./Otto_Magnus_von_Stackelberg_(ambassador)" id="mwDNg" rel="mw:WikiLink" title="Otto Magnus von Stackelberg (ambassador)">Otto Magnus von Stackelberg</a></b>, <a href="./Ambassadors_and_envoys_from_Russia_to_Poland_(1763–1794)" id="mwDNk" rel="mw:WikiLink" title="Ambassadors and envoys from Russia to Poland (1763–1794)">Russian ambassador to Poland</a>, can be considered an unofficial but <i id="mwDNo"><a href="./De_facto" id="mwDNs" rel="mw:WikiLink" title="De facto">de facto</a></i> ruler of <a class="mw-redirect" href="./Polish-Lithuanian_Commonwealth" id="mwDNw" rel="mw:WikiLink" title="Polish-Lithuanian Commonwealth">Poland</a>?