DP
Dorothy Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Dorothy Peterson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Anna — first a daughter (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Peterson |
| Given Name | Dorothy V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Abstractor |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Pl. |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Abstractor |
| Township / Ward | Des Moines |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Iva Peterson | Spouse | — | 23 | ~1917 |
| Dorothy Peterson | Daughter | — | 31 | ~1909 |
| Bernard Peterson | Son | — | 25 | ~1915 |
| Mattie Peterson | Head | — | 51 | ~1889 |
Census Appearances
1920
Polk, Iowa
Daughter, age 10
Polk, Iowa · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 21
Polk, Iowa · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Abstractor |
| Industry | Independent |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 31
Polk-County, Iowa · implied b. ~1909 — 4 household members
| Surname | Peterson |
| Given Name | Dorothy V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Occupation | Abstractor |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Pl. |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Dorothy Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Anderson (~0.92 confidence) and mother Anna Anderson (~0.92 confidence) and father Carl Peterson (~0.92 confidence) and mother Mattie Peterson (~0.92 confidence) and mother Mattie Peterson (~0.92 confidence) and mother Iva Peterson (~0.50 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.85
Father
John Anderson
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Anna Anderson
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Carl Peterson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mattie Peterson
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mattie Peterson
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Iva Peterson
b. ~1917
Source mother
● Household
· direct · ~0.5
This person
Anchor record
Dorothy Peterson
Daughter · 1940 · age 31 · b. ~1909 · Iowa
★ You are viewing this record
Sibling
Bernard Peterson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01196-00304)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald L. Wallin | 8 | Son | — | Iowa |
| 2 | Harry W. Wallin | 50 | Head | Electrician | Minnesota |
| 3 | Ruth F. Wallin | 51 | Wife | Housewife | Iowa |
| 4 | Jean E. Wallin | 20 | Daughter | Steno. | Iowa |
| 5 | Doris A. Wallin | 17 | Daughter | Student | Iowa |
| 6 | Alma Wallin | 54 | Border | Clerk | Minnesota |
| 7 | Richard T. Thomas | 45 | Head | Mgr. | Minnesota |
| 8 | Ester A. Thomas | 39 | Wife | Housewife | Minnesota |
| 9 | Richard T. Jr. Thomas | 16 | Son | Student | Minnesota |
| 10 | Douglas A. Thomas | 10 | Son | — | Minnesota |
| 11 | Donald S. Thomas | 10 | Son | — | Minnesota |
| 12 | Earn J. Gritton | 41 | Head | Lawyer | Iowa |
| 13 | Elva M. Gritton | 37 | Wife | Housewife | Illinois |
| 14 | James H. Gritton | 11 | Son | — | Iowa |
| 15 | Charles E. Gritton | 9 | Son | — | Iowa |
| 16 | Nancy E. Gritton | 1 | Daughter | — | Iowa |
| 17 | Cecil E. Calkin | 28 | Head | Book Keeper | Iowa |
| 18 | Helen K. Calkin | 26 | Wife | Housewife | Iowa |
| 19 | Sandra L. Calkin | 2 | Daughter | — | Iowa |
| 20 | Fred D. Schueter | 50 | Head | Salesman | Wisconsin |
| 21 | Adele A. Schueter | 46 | Wife | Housewife | Iowa |
| 22 | Arthur J. Gross | 52 | Brother | Carpenter | Iowa |
| 23 | Verne J. Alexander | 48 | Head | Credit Mgr | Arkansas |
| 24 | Cora M. Alexander | 52 | Wife | Housewife | Missouri |
| 25 | Samuel H. Schauer | 49 | Head | Pharmacist | Wisconsin |
| 26 | Homer M. Schauer | 18 | Son | Clerk | Iowa |
| 27 | Marie E. Schauer | 13 | Daughter | — | Iowa |
| 28 | Bernice Witt | 43 | Border | House Keeper | Iowa |
| 29 | Everett L. Davis | 36 | Head | Salesman | Iowa |
| 30 | Erma M. Davis | 25 | Wife | Housewife | Iowa |
| 31 | Patricia L. Davis | 3 | Daughter | — | Iowa |
| 32 | William E. Davis | 1 | Son | — | Iowa |
| 33 | Otto G. Herbrecht | 52 | Head | Sec. | Illinois |
| 34 | Katherine S. Herbrecht | 56 | Wife | Housewife | Ohio |
| 35 | Sue E. Herbrecht | 30 | Daughter | Sec. | Ohio |
| 36 | Mattie Peterson | 51 | Head | Housewife | Iowa |
| 37 | Dorothy V. Peterson THIS PERSON | 31 | Daughter | Abstractor | Iowa |
| 38 | Bernard Peterson | 25 | Son | Abstractor | Iowa |
| 39 | Iva B. Peterson | 23 | Wife | Clerk | Iowa |
Pedigree Summary
Dorothy + 1 sibling
Gen 1 · 6 parents
~0.85
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)