Thalberg, Sigismond (Fortuné François)
- Robert Wangermée
(b Pâquis, nr Geneva, 8 Jan 1812; d Posillipo, nr Naples, 27 April 1871). German or Austrian pianist and composer. He was said to be the illegitimate son of Count Moritz Dietrichstein and the Baroness von Wetzlar, but his birth certificate states that his parents were Joseph Thalberg and Fortunée Stein, both of Frankfurt. Although the certificate describes them as ‘mariés’, the wording rather suggests that each was married to someone else. It seems possible that Dietrichstein induced Joseph Thalberg to assume paternity and that the mother was a baroness in disguise; but the circumstances remain mysterious....