Nils Otto Tank

Nils Otto Tank (March 11, 1800 – May 4, 1864) was a Norwegian born, Moravian Church missionary and teacher.

In 1849, Otto Tank married Caroline Louise Albertina van der Meulen (1803–1891) who had been born in Amsterdam, Netherlands.

However Tank refused to grant title to land or adhere to the governing body of the Moravian Church.

Personal differences soon arose between Tank and Reverend Iverson over leadership and the religious community elected to settle at Ephraim, Wisconsin.

Tank also planned a canal between Green Bay and Prairie du Chien, this was before the railroad became preferred transportation.

She also donated land to build the Clara Tank Home for Missionary Children in Oberlin, Ohio.