SA
Shirley Anderson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grundy-County, Illinois
Our Model Tree links this Shirley Anderson across the 1930 and 1940 US Censuses in Grundy-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grundy-County, Illinois |
| Surname | Anderson |
| Given Name | Shirley |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Marseilles |
| Additional Details | |
| Highest Grade | G 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Erienne Township |
| Est. Birth Year | ~1926 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Shirley | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Anderson | Daughter | — | 6 | ~1934 |
| Edward Anderson | Son | — | 20 | ~1920 |
| John Anderson | Head | — | 53 | ~1887 |
| Art Mitchell | Other | — | 35 | ~1905 |
| James Anderson | Son | — | 10 | ~1930 |
| Stanley Anderson | Son | — | 17 | ~1923 |
| Shirley Anderson | Daughter | — | 14 | ~1926 |
| Isabel Anderson | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Lasalle, Illinois
Daughter, age 3
Lasalle, Illinois · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Shirley |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Grundy-County, Illinois
Daughter, age 14
Grundy-County, Illinois · implied b. ~1926 — 8 household members
| Surname | Anderson |
| Given Name | Shirley |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Marseilles |
| Highest Grade | G 7 |
| 1935 Residence | Illinois |
| 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 Shirley Anderson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Shirley Anderson
Daughter · 1940 · age 14 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Dorothy Anderson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Anderson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Anderson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Anderson
Sibling · 1940 · age 20
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 — Grundy-County, Illinois
Open full size
1940 US Federal Census — Grundy-County, Illinois
Page Contents
22 people indexed on this census page (nara:1940:m-t0627-00809-00113)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Menaugh | 24 | Daughter | Welfare Worker | Illinois |
| 2 | Gertie Menaugh | 71 | Mother | — | Illinois |
| 3 | Elmer Vendelson | 35 | Head | Farm Operator | Illinois |
| 4 | John W. Anderson | 53 | Head | Farm Operator | Sweden |
| 5 | Isabel Anderson | 52 | Wife | — | Norway |
| 6 | Edward Anderson | 20 | Son | Laborer | Illinois |
| 7 | Stanley Anderson | 17 | Son | Laborer | Illinois |
| 8 | Shirley Anderson THIS PERSON | 14 | Daughter | — | Illinois |
| 9 | James Anderson | 10 | Son | — | Illinois |
| 10 | Dorothy Anderson | 6 | Daughter | — | Illinois |
| 11 | Art Mitchell | 35 | Lodger | Moulder | Illinois |
| 12 | Gus Peterson | 66 | Head | Farm Operator | Sweden |
| 13 | Lena Peterson | 64 | Wife | — | Sweden |
| 14 | Edna Peterson | 38 | Daughter | — | Illinois |
| 15 | Gilbert Peterson | 28 | Son | Laborer | Illinois |
| 16 | Harvey Peterson | 25 | Son | Laborer | Illinois |
| 17 | John Thompson | 58 | Head | Farm Operator | Norway |
| 18 | Ella Thompson | 53 | Wife | — | Illinois |
| 19 | Alton Thompson | 25 | Son | Laborer | Illinois |
| 20 | Eugene Thompson | 14 | Son | — | Illinois |
| 21 | Olga Copper | 43 | Head | — | Illinois |
| 22 | Bernice Copper | 17 | Daughter | New Worker | Illinois |
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)