In 1686, when Daniel Gabriel Fahrenheit was born, Danzig was a predominantly German–speaking city in the Pomeranian Voivodeship of the Polish–Lithuanian Commonwealth. In 1701, at the age of 15, he moved to the Dutch Republic, where he remained for the rest of his life. Wikipedia describes him as "the originator of the era of precision thermometry" and "one of the notable figures in the Golden Age of Dutch science and technology."
Danzig was renamed Gdańsk in 1945, when Poland's German–speaking population either fled or was expelled.
© Haydn Thompson 2021