Rosa Wahl Bentz was born I think closer to 1871 in Iowa, married George Bentz, had 9 children I've found so far: Emma b.1888 in Iowa, Harry b. 1889 in Iowa, Paulina b.1891 in MN, George b. 1893 in MN, Edward Wilhelm b. 1894 in Pipestone, and died in Tacoma in 1979, Rosalia b. 1897 in MN, Lisabeth b. 1898 in MN, Ida b. 1901 in MN and Pat b. 1904 in MN.
I found them on the 1905 MN Census in East Grand Forks, MN. George Sr. died in Polk County in 1906, and according to son Edward's bio she moved the family shortly after to Tacoma. I have not found them on the 1900 or 1910 US census yet, but did find her and some of the children on the 1920 census. There is another son Ted living with her on the 1920 census.
I got Rose's maiden name from son Eddie's Alcatraz prison record.