The Walburga Stemmer reference article from the English Wikipedia on 24-Apr-2004
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Walburga Stemmer

Walburga Stemmer was a fruit-seller living in Weingarten who, according to some, had an affair with Erwin Rommel and gave birth to his daughter, Gertrud Pan, in 1913. But Rommel turned away from her and married another woman, Lucie Mollin. Stemmer later committed suicide when Rommel had a child with Lucie.