Olá Buggy. Pesquisei rapidamente e a dificuldade é porque o nome pelo qual ficou mais conhecido é Pieter Saenredam. O Janszoon às vezes é omitido e outras fica abreviado (Jaensz.). Pelo que descobri, ele era pintor, sendo o primeiro a retratar com realismo e perspectiva correta o interior de várias igrejas na Holanda.

A Wikipédia em holandês tem algumas informações sobre ele, mas não faz qualquer referëncia sobre seu trabalho no Brasil ou como tipógrafo:
http://nl.wikipedia.org/wiki/Pieter_Jansz._Saenredam

English:
Through a quick search, it seems Pieter has better known as Saenredam. Janszoon appears sometimes in abbreviated form (Jaensz.) in web searches. He was mainly a painter, the first to adopt correct perspective and realism to picture the inner of churches in Nederlands.

Dutch version of Wikipedia brings some other information, although does not mention any work made in Brazil or as typographer:
http://nl.wikipedia.org/wiki/Pieter_Jansz._Saenredam

Igor, I'm pretty sure that the painter Pieter Janszoon Saenredam is a different person from the one about whom Leonardo is asking.

You're right! A deeper search showed the person is Pieter Janszoon Post, another painter. He was personal architect for Mauritius de Nassau during the Dutch occupation in Brazil. Anyway, I cannot find any information about typography related to him.

The mistake is plausible as their living periods are very near and both were painters.

How do you discovered this, John? And why Janszoon is usualy abreviated in Dutch?

Janszoon is the Dutch equivalent of Johnson, Jackson, Robertson, and Williamson. It's generally used as a sort of middle name, but it survives to this day as the common surname Jansen (also sp. "Janssen").

I imagine the abbreviation was to save a second in writing :-) It was quite common. The female equivalent is "dr.", as in "Kenau Simonsdr. Hasselaar" (who, by the way, was a woman so fearsome that "kenau" is used to this day to describe particularly self-assertive women ;-))

Here’s some information found on a Brazilian website [English version via Google translate.

@ Theunis: thanks! If I understood correctly, a son of Jan Timman would be also Janszoon if he/she was born during the Baroque. AFAIK, this kind of middle name also exists in Russian.

@ Florian: nice found. The Dutchmen tried to implement a print service here but unfortunately it did not succeed. Just in middle 1700s, after a century, a printer began to produce books in Rio – and soon was prohibited by Portugal and the Inquisition.

Nice thread.

frieberger, i think florian is right. i've just read the text he found. at least, a similar one assigned by Carlos Rizzini.

Janszoon was probably a typographer contracted by Nassau to work here, in Recife. Rizzini tells us that he used to be famous but i've never heard about him before...

Yes, Leonardo. John, Theunis and Florian gave good information about Pieter – much better than mine. It's a pity that typography has been not established. The Dutch Brazil is a permanent source of historical research.

Visitei teu blog. Bem interessantes os tipos que pareciam ser da Hamilton.