[1] He received his first music lessons from his father Jean Wiernsberger (1833–1890) and left Alsace following the annexation of 1871 with his family to settle in Paris.
He then entered the Paris Conservatory where he was a pupil of Émile Durand, Napoléon Henri Reber and Antoine Marmontel.
On his return to France in 1878, he settled in Reims, taking an active part in local musical life.
[7] Wiernsberger settled in Paris, was artistic secretary of the Gaveau piano factory and published light music under the pseudonym Nestor Sappé.
Later he edited numerous works by composers of the baroque and classical periods for the publisher Heugel for educational purposes.