Wikipediaによればそれは都市伝説とか。　さて真相は？

>A widely propagated urban myth is that she was an aunt of Norman Schwarzkopf.
>However, the parents of Norman Schwarzkopf, Sr. were Julius George Schwarzkopf
>and Agnes Sarah Schmidt whereas Elisabeth's were Friedrich Schwarzkopf and
>Elisabeth Fröhling. Also, Elisabeth was an only child.

ttp://en.wikipedia.org/wiki/Elisabeth_Schwarzkopf