Infanta María de la Paz of Spain 
... that the biological father of Infanta María de la Paz of Spain was not the King of Spain, but one of the Queen’s lovers?
... that the biological father of <b id="mwCcM"><a href="./Infanta_María_de_la_Paz_of_Spain" id="mwCcQ" rel="mw:WikiLink" title="Infanta María de la Paz of Spain">Infanta María de la Paz of Spain </a></b> was not the <a class="mw-redirect" href="./Francis_of_Spain" id="mwCcU" rel="mw:WikiLink" title="Francis of Spain"> King of Spain</a>, but one of the <a class="mw-redirect" href="./Isabella_II_of_Spain" id="mwCcY" rel="mw:WikiLink" title="Isabella II of Spain">Queen</a>’s lovers?