Harrison family of Virginia
... that three members of the Harrison family of Virginia served as President of the United States?
... that three members of the <b id="mwBww"><a href="./Harrison_family_of_Virginia" id="mwBw0" rel="mw:WikiLink" title="Harrison family of Virginia">Harrison family of Virginia</a></b> served as <a href="./President_of_the_United_States" id="mwBw4" rel="mw:WikiLink" title="President of the United States">President of the United States</a>?