Princess Helena of the United Kingdom
...that Princess Helena of the United Kingdom was the first of Queen Victoria's relations to celebrate her 50th wedding anniversary?
...that <b id="mwA4Q"><a href="./Princess_Helena_of_the_United_Kingdom" id="mwA4U" rel="mw:WikiLink" title="Princess Helena of the United Kingdom">Princess Helena of the United Kingdom</a></b> <i id="mwA4Y">(pictured)</i> was the first of <a class="mw-redirect" href="./Victoria_of_the_United_Kingdom" id="mwA4c" rel="mw:WikiLink" title="Victoria of the United Kingdom">Queen Victoria</a>'s relations to celebrate her 50th <a href="./Wedding_anniversary" id="mwA4g" rel="mw:WikiLink" title="Wedding anniversary">wedding anniversary</a>?