Samson and Delilah (French: "Samson et Dalila" ), Op. 47, is a grand opera in three acts and four scenes by Camille Saint-Saëns to a French libretto by Ferdinand Lemaire. It was first performed in Weimar at the Grossherzogliches (Grand Ducal) Theater (now the Staatskapelle Weimar) on 2 December 1877 in a German translation.
Camille Saint-Saëns did not compose the libretto of Samson and Delilah.
The text says the French libretto was by Ferdinand Lemaire, so he is the author of the libretto. Samson and Delilah is by Camille Saint-Saëns to a libretto by Ferdinand Lemaire, which caused the algorithm's confusion.