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Lillian Allen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Lillian Allen across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 8-person household.
Age 19
b. ~1921
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Allen |
| Given Name | Lillian M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Occupation | Same place |
| Industry | 6 |
| Highest Grade | H 4 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Same Place |
| Township / Ward | Rockford |
| Est. Birth Year | ~1921 |
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 Lillian | Age | Birth yr |
|---|---|---|---|---|
| Harry Allen | Head | — | 43 | ~1897 |
| Lillian Allen | Daughter | — | 19 | ~1921 |
| Ellery Allen | Daughter | — | 11 | ~1929 |
| Rosella Allen | Spouse | — | 41 | ~1899 |
| John Aaby | Other | — | 72 | ~1868 |
| La Allen | Daughter | — | 13 | ~1927 |
| Clifford Allen | Son | — | 20 | ~1920 |
| Carol Allen | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Winnebago, Illinois
Daughter, age 9
Winnebago, Illinois · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Lillian |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Minnesota |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Daughter, age 19
Winnebago-County, Illinois · implied b. ~1921 — 8 household members
| Surname | Allen |
| Given Name | Lillian M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (County) | Winnebago |
| Occupation | Same place |
| Industry | 6 |
| Highest Grade | H 4 |
| 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 Lillian Allen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lillian Allen
Daughter · 1940 · age 19 · b. ~1921 · Illinois
★ You are viewing this record
Sibling
Clifford Allen
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
La Allen
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellery Allen
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carol Allen
Sibling · 1940 · age 2
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00915-00463)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sam Rex | 2 | Son | Same Place | Illinois |
| 2 | Richard L Jones | 27 | Head | Same Place | Illinois |
| 3 | Myrtle C Jones | 29 | Wife | Same Place | Illinois |
| 4 | Donald J Jones | 3 | Son | Same Place | Illinois |
| 5 | Nancy Marion Jones | 24 | Lodger | Same Place | Illinois |
| 6 | Harry R Allen | 43 | Head | Same Place | Wisconsin |
| 7 | Rosella Allen | 41 | Wife | Same Place | Minnesota |
| 8 | Clifford B Allen | 20 | Son | Same Place | Illinois |
| 9 | Lillian M Allen THIS PERSON | 19 | Daughter | Same Place | Illinois |
| 10 | La Verne R Allen | 13 | Daughter | Same Place | Illinois |
| 11 | Ellery Allen | 11 | Daughter | Same Place | Illinois |
| 12 | Carol Allen | 2 | Daughter | Same Place | Illinois |
| 13 | John Aaby | 72 | Lodger | Same Place | Minnesota |
| 14 | Curtis J Berg | 48 | Head | Same Place | Illinois |
| 15 | Lillian Berg | 42 | Wife | Same Place | Michigan |
| 16 | Wallace C England | 39 | Head | Same Place | Illinois |
| 17 | Fern England | 26 | Wife | Same Place | Illinois |
| 18 | Beverly England | 3 | Daughter | Same Place | Illinois |
| 19 | Joyce England | 1 | Daughter | Same Place | Illinois |
| 20 | Floyd A Hanford | 46 | Head | Same Place | Illinois |
| 21 | Marie L Hanford | 42 | Wife | Same Place | Illinois |
| 22 | Jane K Hanford | 11 | Daughter | Same Place | Illinois |
| 23 | John Erickson | 50 | Head | 50 | Sweden |
| 24 | Ella Erickson | 54 | Wife | Same Place | Illinois |
| 25 | Donald Erickson | 19 | Son | Same Place | Illinois |
| 26 | Paul N Alberts | 34 | Head | Same Place | Illinois |
| 27 | Mona Alberts | 29 | Wife | Same Place | Iowa |
| 28 | Jane Alberts | 7 | Daughter | Same Place | Illinois |
| 29 | Donald Alberts | 3 | Son | Same Place | Illinois |
| 30 | Lester R Smith | 32 | Head | Same Place | Iowa |
| 31 | Elva N Smith | 29 | Wife | Same Place | Iowa |
| 32 | Donna Smith | 8 | Daughter | Same Place | Illinois |
| 33 | Kay L Smith | 4 | Daughter | Same Place | Illinois |
| 34 | Richard J Jones | 46 | Head | Same Place | Illinois |
| 35 | Grace Jones | 45 | Wife | Same Place | Illinois |
| 36 | Luethya Dorothy Jones | 21 | Lodger | Same Place | Illinois |
| 37 | Max Blonde | 36 | Head | Same Place | Illinois |
| 38 | Iris Blonde | 32 | Wife | Same Place | Illinois |
| 39 | Floyd A Eklund | 30 | Head | Same Place | Illinois |
| 40 | Lolita Eklund | 28 | Wife | Same Place | Illinois |
Related Census Records
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)