In the article "Investing in Creativity, Nicolas de Stael" to correct errors:
(
Http://artinvestment.ru/invest/ideas..._de_stael.html)
de Stael (real name - Nikolai Stahl von Holstein)
Correct, adopted in the Russian Empire, writing names - Steel von Holstein.
His father, Baron Vladimir Stahl von Holstein, was a general in the tsarist army and the last commandant of the fortress.
He was assistant commandant.
http://www.grwar.ru/persons/persons.html?id=2159