MP
Mildred Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Henry-County, Illinois
Our Model Tree links this Mildred Peterson across the 1920, 1930 and 1940 US Censuses in Henry-County, Illinois (XGBoost, ~Confirmed), with identified parents Anna & Anna — first a daughter (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Henry-County, Illinois |
| Surname | Peterson |
| Given Name | Mildred, M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | KEWANEE CITY |
| 1935 Residence (County) | HENRY |
| Additional Details | |
| Occupation | Typist |
| Industry | Fitting Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Typist |
| Township / Ward | Kewanee City |
| Est. Birth Year | ~1906 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Peterson | Daughter | — | 34 | ~1906 |
| Frans Peterson | Head | — | 59 | ~1881 |
| Anna Peterson | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Henry, Illinois
Daughter, age 14
Henry, Illinois · implied b. ~1906 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Henry, Illinois
Daughter, age 24
Henry, Illinois · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mildred G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Trained Nurse |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Henry-County, Illinois
Daughter, age 34
Henry-County, Illinois · implied b. ~1906 — 3 household members
| Surname | Peterson |
| Given Name | Mildred, M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | KEWANEE CITY |
| 1935 Residence (County) | HENRY |
| Occupation | Typist |
| Industry | Fitting Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mildred Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Anna Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and father Frank Peterson (~0.92 confidence) and father Frans Peterson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Anna Peterson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Frank Peterson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Frans Peterson
b. ~1881
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mildred Peterson
Daughter · 1940 · age 34 · b. ~1906 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Henry-County, Illinois
Open full size
1940 US Federal Census — Henry-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00812-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hazel, F. Minks | 34 | Wife | — | Illinois |
| 42 | Joanne Minks | 9 | Daughter | — | Illinois |
| 43 | Otis Holmes | 37 | Head | Laborer | Missouri |
| 44 | Mary Holmes | 37 | Wife | — | Kansas |
| 45 | Genela Mae Holmes | 15 | Daughter | — | Kansas |
| 46 | Carl, D. Holmes | 12 | Son | — | Kansas |
| 47 | Mary Jane Holmes | 8 | Daughter | — | Kansas |
| 48 | Frans O. Peterson | 59 | Head | Foundry Labor | Sweden |
| 49 | Anna C. Peterson | 61 | Wife | — | Sweden |
| 50 | Mildred, M. Peterson THIS PERSON | 34 | Daughter | Typist | Illinois |
| 51 | John, D. Schneider | 31 | Head | Mail Clerk | Illinois |
| 52 | Geraldine Schneider | 28 | Wife | — | Illinois |
| 53 | John, D. Jr. Schneider | 4 | Son | — | Illinois |
| 54 | Jerome Schneider | 3 | Son | — | Illinois |
| 55 | Patricia Schneider | 2 | Daughter | — | Illinois |
| 56 | John, A. Hedenstedt | 67 | Head | Machinist | Sweden |
| 57 | Vern, T. Johnson | 38 | Son-in-law | Plumber | Illinois |
| 58 | Hulda Louise Johnson | 35 | Daughter | — | Illinois |
| 59 | Emma, M. Hedenstedt | 56 | Wife | — | Sweden |
| 60 | Joseph Watson | 43 | Head | Machinist | Illinois |
| 61 | Versa Watson | 32 | Wife | — | Illinois |
| 62 | Joseph, Jr. Watson | 12 | Son | — | Illinois |
| 63 | Louella, M. Watson | 2 | Daughter | — | Illinois |
| 64 | Forest E. Keim | 46 | Head | Hay Baler | Illinois |
| 65 | Helen, I. Keim | 33 | Wife | — | Illinois |
| 66 | Kathryn Keim | 13 | Daughter | — | Illinois |
| 67 | Forrest, D. Keim | 11 | Son | — | Illinois |
| 68 | Barbara Keim | 9 | Daughter | — | Illinois |
| 69 | William, C. Busch | 42 | Head | Office Asst | New York |
| 70 | Effie, K. Busch | 44 | Wife | — | Illinois |
| 71 | Beverly J. Busch | 18 | Daughter | Librarian | Illinois |
| 72 | Willmae, A. Busch | 13 | Daughter | — | Illinois |
| 73 | William Busch | 10 | Son | — | Illinois |
| 74 | Louis, F. Saul | 57 | Head | Trucker | Illinois |
| 75 | Eva Saul | 51 | Wife | — | Illinois |
| 76 | Lee Saul | 26 | Son | Clerk | Illinois |
| 77 | Harold Saul | 22 | Son | Stenographer | Illinois |
| 78 | Stanley Saul | 24 | Son | Cook | Illinois |
| 79 | Ray Clong | 51 | Head | Office Worker | Illinois |
| 80 | Lena Clong | 47 | Wife | Case Worker | Illinois |
Pedigree Summary
Mildred
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)