CP
Clarence Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Henry-County, Illinois
Our Model Tree links this Clarence Peterson across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Henry-County, Illinois (XGBoost, ~Confirmed), with identified parents Charles & Anna — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Henry-County, Illinois |
| Surname | Peterson |
| Given Name | Clarence G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Galva City |
| 1935 Residence (County) | Henry |
| Additional Details | |
| Occupation | Plant Manager |
| Industry | Creamery |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Plant Manager |
| Township / Ward | Galva City |
| Est. Birth Year | ~1898 |
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 Clarence | Age | Birth yr |
|---|---|---|---|---|
| Clarence Peterson | Head | — | 42 | ~1898 |
| Eugene Peterson | Son | — | 6 | ~1934 |
| Gladys Peterson | Spouse | — | 33 | ~1907 |
| Audrey Peterson | Daughter | — | 1 | ~1939 |
Census Appearances
1900
Henry, Illinois
Son, age 2
Henry, Illinois · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Jun |
| Birth Year | 1898 |
| 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 |
1910
Henry, Illinois
Son, age 11
Henry, Illinois · implied b. ~1899 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Henry, Illinois
Son, age 22
Henry, Illinois · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Butter Maker |
| Industry | Creamery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Henry, Illinois
Son, age 32
Henry, Illinois · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Clarence G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Cream Tester |
| Industry | Creamery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Henry-County, Illinois
Head, age 42
Henry-County, Illinois · implied b. ~1898 — 4 household members
| Surname | Peterson |
| Given Name | Clarence G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Galva City |
| 1935 Residence (County) | Henry |
| Occupation | Plant Manager |
| Industry | Creamery |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| 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 Clarence Peterson across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Peterson (~0.92 confidence) and mother Anna Peterson (~0.92 confidence) and father Charles Peterson (~0.92 confidence) and father Charles Peterson (~0.92 confidence) and father Charles Peterson (~0.92 confidence) and mother Hannah Peterson (~0.92 confidence) and mother Hannah Peterson (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Peterson
b. ~1853
Source father
● Household
· direct · ~0.92
Mother
Anna Peterson
b. ~1860
Source mother
● Household
· direct · ~0.92
Father
Charles Peterson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Charles Peterson
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Charles Peterson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Hannah Peterson
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Hannah Peterson
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Peterson
Head · 1940 · age 42 · b. ~1898 · 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-t0627-00811-00604)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Della M. Crozier | 67 | Head | — | Indiana |
| 42 | Leo P. Cahill | 44 | Head | Manager | Illinois |
| 43 | Lois Cahill | 23 | Wife | — | Illinois |
| 44 | Mary A. Collinson | 58 | Head | — | Illinois |
| 45 | Pearl E. Collinson | 50 | Daughter | — | Illinois |
| 46 | Ferris J. Wilber | 71 | Head | — | Illinois |
| 47 | Ruth Ella Wilber | 74 | Wife | — | Ohio |
| 48 | Clarence H. Lyford | 55 | Head | Manufacturer | Illinois |
| 49 | Nettie L. Lyford | 50 | Wife | — | Wisconsin |
| 50 | Ruth H. Lyford | 17 | Daughter | — | Illinois |
| 51 | Ruth Ann Ramery | 46 | Head | — | Maryland |
| 52 | Edwin A. Ramery | 15 | Son | Electrician | Illinois |
| 53 | Clarence G. Peterson THIS PERSON | 42 | Head | Plant Manager | Illinois |
| 54 | Gladys B. Peterson | 33 | Wife | — | Illinois |
| 55 | Eugene Peterson | 6 | Son | — | Illinois |
| 56 | Audrey Peterson | 1 | Daughter | — | Illinois |
| 57 | Amelia Larson | 71 | Head | — | Sweden |
| 58 | Eva Larson | 35 | Daughter | Book Keeper | Illinois |
| 59 | Linnea Hultquist | 49 | Head | — | Illinois |
| 60 | Arlene Hultquist | 22 | Daughter | Housework | Illinois |
| 61 | John A. Hultquist | 76 | Brother in law | — | Sweden |
| 62 | Carl A. Hultquist | 71 | Brother in law | — | Sweden |
| 63 | Paul K. Crowner | 26 | Head | Grain Elevator Manager | Iowa |
| 64 | Adele Crowner | 25 | Wife | — | Iowa |
| 65 | Karen Crowner | 2 | Daughter | — | Illinois |
| 66 | Leonard T. Highlander | 66 | Head | Clerk | Illinois |
| 67 | Lillie M. Highlander | 65 | Wife | — | Illinois |
| 68 | Robert W. Swanson | 24 | Head | Laborer | Illinois |
| 69 | Penny I. Swanson | 23 | Wife | — | Arkansas |
| 70 | Robert K. Swanson | 3 | Son | — | Illinois |
| 71 | Kenneth Swanson | 1 | Son | — | Oklahoma |
| 72 | Charles M. Cutchen | 77 | Head | Retired | Illinois |
| 73 | Ruby E. Cutchen | 69 | Wife | — | Illinois |
| 74 | Gilbert Headley | 50 | Head | Tipple Foreman | Indiana |
| 75 | Iney B. Headley | 40 | Wife | — | Indiana |
| 76 | Dick W. Headley | 15 | Son | — | Indiana |
| 77 | Janet K. Headley | 2 | Daughter | — | Illinois |
| 78 | Arthur R. Westlin | 52 | Head | Auctioneer | Illinois |
| 79 | Florence Westlin | 56 | Wife | — | Illinois |
| 80 | Lois A. Westlin | 16 | Daughter | — | Illinois |
Pedigree Summary
Clarence
Gen 1 · 7 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)