Theodor Kerckring

In 1667 he was visited by Cosimo III de' Medici, interested in new developments in science and curious to see his collection of anatomical objects.

Several sources reveal that Kerckring remained on good terms with Van den Enden, whose daughter Clara Maria he married in 1671.

[4] She helped her father teach Latin; there is a famous but unsubstantiated story that Spinoza loved her unreciprocatedly.

Although further details of his early life are sketchy, it is known that he spent much of his medical career prior to 1675 in Amsterdam at Singel.

[6] He is credited with describing "Kerckring's ossicles", which is an occasional ossification centre in the occipital bone that appears around the 16th week of gestation.