Anna Petrovna
...that Peter the Great's eldest daughter, Anna Petrovna, died in childbirth aged 20, but all the living Romanovs descend from her?
...that <a href="./Peter_the_Great" id="mwAmc" rel="mw:WikiLink" title="Peter the Great">Peter the Great</a>'s eldest daughter, <b id="mwAmg"><a class="mw-redirect" href="./Anna_Petrovna" id="mwAmk" rel="mw:WikiLink" title="Anna Petrovna">Anna Petrovna</a></b>, died in childbirth aged 20, but all the living <a class="mw-redirect" href="./Romanovs" id="mwAmo" rel="mw:WikiLink" title="Romanovs">Romanovs</a> descend from her?