Joannes Masius
Flemish printer and bookseller

Jan Maes or Joannes Masius (active 1566–1615) was a printer and bookseller in the university town of Leuven in the Habsburg Netherlands.
Career
Masius, a native of Leuven, moved to Antwerp to work for Christopher Plantin at the Plantin Press in 1566. He left Plantin in 1567 and in 1570 he was licensed as a printer in the city of Leuven. One of his sons, Joannes Masius the Younger, became a printer-bookseller in Ath; another, Bernard or Bernardin, took over his business in Leuven in 1616.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jan 4, 2026. The linked authority identifier is Q55194251. VIAF identifies the subject as 71474910. The Library of Congress control number is nr97019942. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1566, 1615, 1567 and 1570.
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This entry incorporates text from “Joannes Masius” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.