Sophie of Isenburg
... that Sophie of Isenburg married Prince Georg Friedrich the same year the House of Hohenzollern celebrated its 950th anniversary?
... that <b id="mwB7A"><a href="./Sophie,_Princess_of_Prussia" id="mwB7E" rel="mw:WikiLink" title="Sophie, Princess of Prussia">Sophie of Isenburg</a></b> married <a class="mw-redirect" href="./Georg_Friedrich,_Prince_of_Prussia" id="mwB7I" rel="mw:WikiLink" title="Georg Friedrich, Prince of Prussia">Prince Georg Friedrich</a> the same year the <a href="./House_of_Hohenzollern" id="mwB7M" rel="mw:WikiLink" title="House of Hohenzollern">House of Hohenzollern</a> celebrated its 950th anniversary?