The 1860 United States census showed William Kregal (age 37, born in Sachsen-Meiningen, day laborer) married to Caroline (age 41, born in Sachsen-Meiningen) and living in Sheboygan, Wisconsin. Children Herman (age 18, born in Sachsen-Meiningen), Robert (age 11, born in Wisconsin), Rosalia (age 6, born in Wisconsin), Edward (age 3, born in Wisconsin), and Julia (age 6 months, born in Wisconsin) also lived with the couple.

The 1870 United States census showed William Kruegel (age 47, born in Saxoni, brick maker) married to Paulina (age 48, born in Saxoni) and living in St. Cloud Township, Stearns County, Minnesota. Children Robert (age 21, born in Saxoni, brick maker), Rofalia (age 16, born in Wisconsin), Edward (age 13, born in Wisconsin), Julia (age 10, born in Wisconsin), and Carolina (age 8, born in Wisconsin) also lived with the couple.

The 1875 Minnesota census showed Wm. Krugel (age 53, born in Saxony) married to Karoline (age 54, born in Saxony) and living in St. Cloud Township, Stearns County, Minnesota. Children Julia (age 15, born in Wisconsin) and Caroline (age 12, born in Wisconsin) also lived with the couple.

The 1880 United States census showed Wm. Krugel (age 57, born in Germany, farmer) married to Carolina (age 60, born in Germany) and living in St. Cloud Township, Stearns County, Minnesota. Children Julia (age 19, born in Wisconsin), Carolina (age 17, born in Wisconsin), and John (age 16, born in Minnesota) also lived with the couple.

The 1880 United States census showed Caroline Krugell (age 61, born in Saxony) living with her daughter Rosa Lee (age 25, born in Wisconsin) and her husband James C. (age 31, born in Ohio, brick manufacturer) in Moorhead, Minnesota.

The 1885 Minnesota census showed Caroline Kruegel (age 67, born in Germany) living with Roy (age 5, born in Illinois) in Moorhead, Minnesota.