- Arend Arends
- Bakker Family - My grandfather and great-grandparents emigrated from Holland in 1903 and settled in Iowa in the Grundy and Butler County area. - Barbara
- Bigelow Watch Fob
- Hickman/Bootsmann/Janssen
- Janssen Family
- Severance Family
- Loren & Barbara Toomsen Family
Personal websites of researchers with family ties to Grundy County. If you would like your family link/data added, please contact me and I will add it.