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Anton van Leeuwenhoek. Thonius Philips van Leeuwenhoek, better known as Anton van Leeuwenhoek, (October 24, 1632 - August 30, 1723) was a Dutch tradesman and scientist from Delft, Netherlands. He is known as the Father of Microbiology..
Van Leeuwenhoek's main discoveries are: 1  infusoria (protists in modern zoological classification), in 1674. 2  bacteria, (e.g., large Selenomonads from the human mouth), in 1683. 3  the vacuole of the cell. 4  spermatozoa, in 1677. 5  the banded pattern of muscular fibers, in 1682.