Nell Truman
... that in April 1968, Nell Truman and her sister Christine became the first winners of an open tennis event by winning the women's doubles title at the British Hard Court Championships?
... that in April 1968, <b id="mwCco"><a href="./Nell_Truman" id="mwCcs" rel="mw:WikiLink" title="Nell Truman">Nell Truman</a></b> and her sister <a href="./Christine_Truman" id="mwCcw" rel="mw:WikiLink" title="Christine Truman">Christine</a> became the first winners of an open tennis event by winning the women's doubles title at the <a href="./British_Hard_Court_Championships" id="mwCc0" rel="mw:WikiLink" title="British Hard Court Championships">British Hard Court Championships</a>?