This Rosetta is NOT same person as this Rosetta :
https://www.findagrave.com/memorial/35059805/rosetta-williams
There are several trees on Ancestry.com that are confusing the 2.
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1880 United States Federal Census
Name: Rosetta Buress [Burress]
Age: 7
Birth Date: Abt 1873
Birthplace: Oregon
Home in 1880: East Salem, Marion, Oregon, USA
Dwelling Number: 250
Race: White
Gender: Female
Relation to Head of House: Daughter
Marital Status: Single
Father's Name: Richard Buress
Father's Birthplace: Indiana
Mother's Name: Henrietta Buress
Mother's Birthplace: Indiana
Household Members Age Relationship
Richard Buress 43 Self (Head)
Henrietta Buress 35 Wife
Jennie Buress 18 Daughter
Sarah Buress 16 Daughter
William Buress 11 Son
Lauretta Buress 7 Daughter
Rosetta Buress 7 Daughter
Eddy Buress 5 Son
Geo. Buress 4 Son
Lizzie Buress 1 Daughter

1900 United States Federal Census
Name: Rosa Williams
Age: 27
Birth Date: Aug 1872
Birthplace: Oregon, USA
Home in 1900: Jefferson, Marion, Oregon
Sheet Number: 3
Number of Dwelling in Order of Visitation: 76
Family Number: 76
Race: White
Gender: Female
Relation to Head of House: Wife
Marital Status: Married
Spouse's Name: John Williams
Marriage Year: 1889
Years Married: 11
Father's Birthplace: Indiana, USA
Mother's Birthplace: Indiana, USA
Mother: number of living children: 2
Mother: How many children: 2
Can Read: Yes
Can Write: Yes
Can Speak English: Yes
Household Members Age Relationship
John Williams 35 Head
Rosa Williams 27 Wife
Delmar Williams 9 Son
Etta Williams 7 Daughter

1910 United States Federal Census
Name: Rosetta Williams
Age in 1910: 37
Birth Date: 1873
Birthplace: Oregon
Home in 1910: Wallowa, Wallowa, Oregon, USA
Street: Whipple Street
Race: White
Gender: Female
Relation to Head of House: Wife
Marital Status: Married
Spouse's Name: John Williams
Father's Birthplace: Indiana
Mother's Birthplace: Kentucky
Native Tongue: English
Attended School: No
Able to read: Yes
Able to Write: Yes
Years Married: 20
Number of Children Born: 3
Number of Children Living: 3
Household Members Age Relationship
John Williams 45 Head
Rosetta Williams 37 Wife
Delmer F Williams 19 Son
Eva A Williams 8 Daughter
Eva A Williams 13 Sister

married
William Emerson Churchill
30 March 1917
Linn Co., Oregon, USA

1920 United States Federal Census
Name: Rosetta Churchill
Age: 48
Birth Year: abt 1872
Birthplace: Oregon
Home in 1920: Alsea, Benton, Oregon
Street: Hackemo and Bench Road
House Number: X
Residence Date: 1920
Race: White
Gender: Female
Relation to Head of House: Wife
Marital Status: Married
Spouse's Name: William Churchill
Father's Birthplace: Indiana
Mother's Birthplace: Kentucky
Able to Speak English: Yes
Able to read: Yes
Able to Write: Yes
Household Members Age Relationship
William Churchill 59 Head
Rosetta Churchill 48 Wife
Belle Williams 9 Daughter