Born: April 10, 1833, Yverdon-les-Bains, Vaud, Switzerland.
Died: November 24, 1907, Préfargier, Neuchâtel, Switzerland.
Châtelanat studied theology at the Free School of Lausanne.
He was ordained in the Free Church in 1858, and successively served as interim pastor at Savigny and Baulmes, then pastor at Échallens (1862–63), Aigle (1872–80) and Corsier (1880–85).
He is remembered as the author of the French version of the Swiss national anthem.
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