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.1161

Charles Rahr, firm of Rahr Bros., proprietors of a large brewery;
manufacture about one thousand barrels per annum; employ five men; erected
in 1865. He was born in Prussia, Germany, in 1836, Nov. 27; he learned his
trade in Germany, and emigrated to America in 1855; settled in Manitowoc,
Wis., and worked in a brewery six months; then went to Davenport, Iowa, and
worked in a brewery eighteen months; then returned to Green Bay, Wis., and
worked in a brewery for his brother and brother-in-law one year. Then
enlisted in Co. H, 9th W. V. I., and was employed fighting the Indians and
bushwhackers in Kansas, Indian Territory, Arkansas and Missouri; he was
mustered out in Milwaukee, December, 1864. Returned to Green Bay a short
time and went to Oshkosh, Wis., and, in company with his brother, erected
their brewery as above noted. Married in Green Bay, Wis., Jan. 1, 1864 and
1865, just on the hour of 12 o'clock, midnight, to Miss Caroline Hochgrave,
who was born in Hanover, Germany; they have one son and six daughters-
Charles, Carolina, Clara, Anna, Ella, Mary and Olga.