Mathematician:Nikolai Ivanovich Lobachevsky/Mistake

Source Work

 * Lobachevsky, Nikolai Ivanovich (1793-1856)
 * Lobachevsky, Nikolai Ivanovich (1793-1856)

Mistake

 * Lobachevsky, Nikolai Ivanovich (1793-1856)

Correction
's date of birth is given by various online sources as $1$ December $1792$.

No record can be found of a later date.