Stephan Kekulé von Stradonitz

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Stephan Kekulé von Stradonitz (1 May 1863, in Ghent – 5 May 1933, in Berlin), was a German lawyer, heraldist and genealogist who popularized a genealogical numbering system of ancestors.

Stephan Kekulé von Stradonitz
Stephan Kekulé von Stradonitz (1904)
Born(1863-05-01)May 1, 1863
DiedMay 5, 1933(1933-05-05) (aged 70)
NationalityGerman
OccupationWriter

Stephan was the son of the prominent chemist Friedrich August Kekulé von Stradonitz, descended from a Czech noble family from Bohemia, and his Belgian wife Stéphanie Drory.

In 1898 Kekulé von Stradonitz published his interpretation of Eytzinger's and Sosa's method in his Ahnentafel-Atlas. Ahnentafeln zu 32 Ahnen der Regenten Europas und ihrer Gemahlinnen, Berlin: J. A. Stargardt, 1898–1904, containing 79 charts of the sovereigns of Europe and their wives. This method became the most common method of numbering ancestors and is known as the Sosa–Stradonitz Method or Ahnentafel.