Johan Radermacher

Hij was in eerste instantie een leerling van Gillis Hooftman, in wiens bedrijf hij ook in Antwerpen ging werken. Later werd humanist en koopman. Hij is de stamvader van de zeeuwse geslachten Radermacher uit wie tal van regenten en andere belngrijke personen zullen volgen.

Over Gillis Hooftman schrijft hij tijdens zijn verblijf in Londen: "In his letter to Jacob Cool in London, Johannes Rademacher wrote:

• 1 "To be able to perform navigational observations, he [Hooftman] sought to acquire all possible reliable measuring equipment, compasses and others. In this way he managed to detect the advantageous wind streams, which enabled him to sail his many ships under most favourable conditions."
• 2 "although my master(=Hooftman) was not a man of letters, he had a great respect for literature, scholars and artists, and definitely for those whose efforts might have profitable results for his personal entreprises ... Contrary to his fellow country men he was very open and helpfull. His navigational skills and his knowledge of seamanship excelled those of any of his Antwerp contemporaries". [ ill. nr. 62: Ortelius ]