History of northern Wisconsin: containing an account of its settlement, growth, development, and resources, an extensive sketch of its counties, cities, towns and villages, their improvements, industries, manufactories, biographical sketches, portraits of prominent men and early settlers, views of county seats, etc. Chicago: Western Historical Co., 1881. p.1148

Thomas Duncan Grimmer, clerk of the circuit court, was born in St. Stephen, in the Province of New Brunswick, March 27, 1828; came to Wisconsin in July, 1851; engaged in lumbering until 1868. Since then he has dealt quite extensively in pine lands. For several years he was Treasurer and one of the Trustees of the Northern Hospital for the Insane. In 1872 he represented his district as Assemblyman, and he has been Clerk of the Circuit Court for the last five years. Mr. Grimmer was married in the town of Utica, Winnebago Co., Wis., Dec. 21, 1857, to Miss Frances C. Cook, a native of Shrewsbury, Vt.