Nicholas de la Fontaine was a Protestant refugee in Geneva who entered the service of John Calvin as his secretary.
In 1553, de la Fontaine published a list of "complaints" against Servetus regarding his supposedly heretical activities.
Notable excerpts from the list include: VIII: To wit, whether he has not written and falsely taught and published that to believe in a single essence of God there are three distinct persons, the Father, the Son, and the Holy Ghost, is to create four phantoms, which cannot and ought not to be imagined.
XXXIV: Item, that the baptism of little children is an invention of the Devil, an infernal falsehood tending to the destruction of all Christianity.
XXXIX: Item, that in the person of M. Calvin, minister of the word of God in the Church of Geneva, he has defamed with printed book the doctrine which he preached, uttering all the injurious and blasphemous things which it is possible to invent.