Steklov was born in Nizhny Novgorod, Russia.
He died in Gaspra[?], Crimea, USSR, (now Ukraine).
See also:
... the population is spread out with 25.6% under the age of 18, 7.5% from 18 to 24, 33.8% from 25 to 44, 21.3% from 45 to 64, and 11.8% who are 65 years of age or older. ...