Nicholas Mills Donaldson (November 12, 1809 – February 7, 1879) was an American lawyer, judge, and pioneer of Wisconsin and Minnesota.
He was a member of the Wisconsin State Assembly for three terms, representing Fond du Lac County, and served fourteen years as a Minnesota district court judge.
He was raised and educated on his father's farm until he went to work as a clerk in the town of Argyle, New York, at age 18.
[1] He was elected to the Fond du Lac County Board of Supervisors for four terms in the 1850s, and was chairman for 1853 and 1856.
[3] In addition, he was a founder and first president of the Fond du Lac Fire Insurance Company,[4] and worked as deputy warden at the Waupun State Prison.