Tadas Ivanauskas

Tadas Ivanauskas (December 16, 1882 – June 1, 1970) was a Lithuanian zoologist and biologist, and one of the founders of Vytautas Magnus University.

He was born in Lebiodka Manor (today Halavičpolie [lt] in Belarus) as a third child of Leonard Iwanowski and Jadwiga Reichel.

Together with another early twentieth-century Lithuanian activist, Michał Römer, Ivanauskas gave lectures about Lithuania in Paris in 1905.

In 1914 and 1917, Ivanauskas participated in scientific expeditions into Northern Russia (Murmansk and Arkhangelsk) and Norway.

There was a noted episode during Polish–Lithuanian War, as one of his brothers during ceasefire transferred Tadas' taxidermical collection through the front line into Lithuania.

The other three brothers of Ivanauskas identified themselves with the other two nationalities of former Polish–Lithuanian Commonwealth, two (Jerzy Iwanowski [be; pl] - politician and engineer and Stanisław Iwanowski - lawyer) chose to become Polish, and one Vacłaŭ Ivanoŭski (politician) - Belarusian (although he would live in interwar Poland).