Johann Sylvan, Adam Neuser, Johannes Willing, Thomas Erastus, Michael Diller, Johannes Brunner, Tilemann Mumius, Petrus Macheropoeus, Johannes Eisenmenger, Immanuel Tremellius and Pierre Boquin are all likely to have contributed to the Catechism in some way.
Aprila 1518, nekaj mesecev po razglasitvi 95 tez, je bil Martin Luther pozvan v Heidelbergu, da jih brani.