great-uncle Cornelis Philips Leeuwenhoek born

January 1, 1558

Leeuwenhoek's great-uncle Cornelis Philips was born around 1558. A notary document that he signed in 1590 gave his age as around 32 years.

He did not use a last name or family name, but he and his brothers Thonis and Jan are the oldest of Leeuwenhoek's ancestors on his father's side that I have been able to trace.