Johann Theodor Eller

Johann Theodor Eller (von Brockhausen) (29 November 1689 – 13 September 1760) was a German physician, mineralogist and chemist who served in the Prussian court.

Tutored initially at home, he was then educated in law at the Quedlinburg gymnasium he went on to study at Jena University in 1709 where he shifted to medicine under G. W. Wedel and H. F. Teichmeyer.

In 1720 he visited London and met the scientists of the day including Isaac Newton.

In 1721 he became a court physician at Anhalt-Bernberg possibly due to the influence of Georg Ernst Stahl (1724-1734).

In 1753 he argued with his colleague Johann Heinrich Pott who wished for a position to be filled by his son-in-law.