Conradus Viëtor

Conradus Vietor (1588–1657) was a Dutch Lutheran minister who is most famous today for his portrait painted by Frans Hals.

He went there to persuade her to come back and spoke "from ten in the morning until late in the evening", attracting quite a crowd of curious Mennonites in the process.

[2] Finally someone from Amsterdam was brought in to shut him up, promising him another chance to air his views, but this never happened and the rumor spread that he had "lost his argument".

[2][3] Four years later, Pieter Jansz Mooyer, a Mennonite leader in Amsterdam (and probably the same person who stopped his passionate speech in Haarlem) wrote an answer to this booklet.

[2][7] His portrait by Frans Hals that was painted in 1644 and shows him gripping his book in both hands, was sold in 2008 to the London art dealer Johnny Van Haeften for £1.2 million, which at the time was considered a "low estimate".