Christian Friedrich Henrici (1700 - 1764) was a librettist for J.S. Bach. The two began collaborating in Leipzig around 1725 where Henrici worked both as a poet and as the Post Office Commissioner. He wrote under the pen name, Picander.
Bach and Picander collaborated on religious works — most notably, the St. Matthew Passion. Bach also used Picander’s poetry in secular works including the Peasant, Shepherds’ and Coffee Cantatas.
Bach and Picander must have enjoyed a close relationship for many years. Elizabeth Henrici, Picander’s wife, served as godparent to Bach’s nineteenth child, ten years after the premiere of the St. Matthew Passion.