WP
Walter Peterson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Walter Peterson across the 1900, 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Lottie & Chas — first a head (b.~1900), then head of a 3-person household.
Age 30
b. ~1900
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Peterson |
| Given Name | Walter C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Occupation | Bridge Des. Engr |
| Industry | City Hall |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 40 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Bridge Des. Engr |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1900 |
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 1930 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Charles Peterson | Son | — | 3 | ~1927 |
| Walter Peterson | Head | — | 30 | ~1900 |
| Milda Peterson | Spouse | — | 31 | ~1899 |
Census Appearances
1900
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Nov |
| Birth Year | 1899 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1900 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 20
Cook, Illinois · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Clerk |
| Industry | Insurance Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 30
Cook, Illinois · implied b. ~1900 — 3 household members
| Surname | Peterson |
| Given Name | Walter C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Bridge Des. Engr |
| Industry | City Hall |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 40 |
| Home Value / Rent | R |
| Veteran | R |
| 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 Walter Peterson across 4 US Census years (1900, 1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: mother Lottie Peterson (~0.92 confidence) and father Chas Peterson (~0.92 confidence) and father John Peterson (~0.92 confidence) and mother Gustava Peterson (~0.92 confidence) and mother Caroline Peterson (~0.92 confidence) and mother Clarence Peterson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Lottie Peterson
b. ~1865
Source mother
● Household
· direct · ~0.92
Father
Chas Peterson
b. ~1866
Source father
● Household
· direct · ~0.92
Father
John Peterson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Gustava Peterson
b. ~1871
Source mother
● Household
· direct · ~0.92
Mother
Caroline Peterson
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Clarence Peterson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Peterson
Head · 1930 · age 30 · b. ~1900 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
31 people indexed on this census page (ia:1930:illinoiscensus00reel442:0506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anne Siminski | 9 | Daughter | — | Illinois |
| 52 | Lester Bass | 28 | Head | Carpenter | Illinois |
| 53 | Nannie Bass | 28 | Wife | — | Illinois |
| 54 | Bobette Bass | 8 | Daughter | — | Illinois |
| 55 | Lester Bass | 6 | Nephew | — | Illinois |
| 56 | William Rebelky | 29 | Head | Truck Driver | Illinois |
| 57 | Martin Rebelky | 26 | Brother | Buffer | Illinois |
| 58 | John M Person | 64 | Head | Meat Cutter | Sweden |
| 59 | Hulda Person | 51 | Wife | — | Sweden |
| 60 | Alice Butler | 25 | Daughter | — | Illinois |
| 61 | Joan Butler | 0 | Granddaughter | — | Illinois |
| 62 | Walter C Peterson THIS PERSON | 30 | Head | Bridge Des. Engr | Illinois |
| 63 | Milda Peterson | 31 | Wife | — | Sweden |
| 64 | Charles E Peterson | 3 | Son | — | Illinois |
| 65 | Stanley Pojak | 32 | Head | Mill Work Est | Illinois |
| 66 | Violet Pojak | 31 | Wife | — | Illinois |
| 67 | Stanley Pojak | 8 | Son | — | Illinois |
| 68 | Nedra Pojak | 2 | Daughter | — | Illinois |
| 69 | Carl Linder | 44 | Head | Mail Handler | Sweden |
| 70 | Emma Linder | 39 | Wife | — | Sweden |
| 71 | Erantus Olson | 37 | Head | Stock Clerk | Illinois |
| 72 | Edith Olson | 32 | Wife | — | Illinois |
| 73 | Frances Olson | 4 | Daughter | — | Illinois |
| 74 | Charles Peterson | 68 | Head | Carpenter | Sweden |
| 75 | Anna Peterson | 69 | Wife | — | Sweden |
| 76 | Peter Redstrom | 36 | Boarder | Carpenter | Sweden |
| 77 | Ellen Carlson | 47 | Head | Gen Housework | Sweden |
| 78 | Ethel Carlson | 21 | Son | Shipping Clerk | Illinois |
| 79 | Harold Carlson | 20 | Son | — | Illinois |
| 80 | Thyra Carlson | 14 | Daughter | — | Illinois |
| 81 | Walter Carlson | 11 | Son | — | Illinois |
Pedigree Summary
Walter
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)