Ernestine Schumann-Heink
...that although opera contralto Ernestine Schumann-Heink had a son fighting on the other side, she toured the United States to raise money for the USA in World War I?
...that although <a href="./Opera" id="mwApw" rel="mw:WikiLink" title="Opera">opera</a> <a href="./Contralto" id="mwAp0" rel="mw:WikiLink" title="Contralto">contralto</a> <b id="mwAp4"><a href="./Ernestine_Schumann-Heink" id="mwAp8" rel="mw:WikiLink" title="Ernestine Schumann-Heink">Ernestine Schumann-Heink</a></b> had a son fighting on the other side, she toured the <a href="./United_States" id="mwAqA" rel="mw:WikiLink" title="United States">United States</a> to raise money for the USA in <a href="./World_War_I" id="mwAqE" rel="mw:WikiLink" title="World War I">World War I</a>?