STERLING WEEKLY GAZETTE, Sterling, IL
Oct. 1, 1881, 7;5

FROM TAMPICO –

Mrs. Theodore Jarvis died Monday night, leaving a wife [sic] and two little children to mourn her loss.

***end of obit****

I'm not sure if this is the same person, but it is a strong possibilty:

1880 United States Federal Census about Theodore Jarvis
Name:     Theodore Jarvis
Home in 1880:     Tampico, Whiteside, Illinois
Age:     32
Estimated Birth Year:     abt 1848
Birthplace:     Delaware
Relation to Head of Household:     Self (Head)
Spouse's Name:     Martha Jarvis
Father's birthplace:     Delaware
Mother's birthplace:     Delaware
Occupation:     Well Driver
Marital Status:     Married
Race:     White
Gender:     Male
Household Members: Name     Age
Theodore Jarvis     32
Martha Jarvis     24
James Jarvis     2
Alvin Jarvis     8m