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Lillian Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Lillian Williams across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents Carrie & Frank — first a daughter (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Williams |
| Given Name | Lillian E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Millcrest |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same house |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Township / Ward | Millcrest |
| Est. Birth Year | ~1918 |
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 1940 census.
| Name | Relation to head | Relative to Lillian | Age | Birth yr |
|---|---|---|---|---|
| Lillian Williams | Daughter | — | 22 | ~1918 |
| Ella Williams | Head | — | 58 | ~1882 |
| Edward Williams | Son | — | 25 | ~1915 |
Census Appearances
1920
New Castle, …
Daughter, age 1
New Castle, Delaware · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lillian P |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Maryland |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Daughter, age 12
New Castle, Delaware · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lillian J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Daughter, age 22
New-Castle-County, Delaware · implied b. ~1918 — 3 household members
| Surname | Williams |
| Given Name | Lillian E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Millcrest |
| 1935 Residence (County) | New Castle |
| Highest Grade | H-3 |
| 1935 Residence | Same house |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Carrie Williams (~0.92 confidence) and father Frank Williams (~0.92 confidence) and father William Williams (~0.92 confidence) and mother Ella Williams (~0.92 confidence) and mother Ella Williams (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Carrie Williams
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
Frank Williams
b. ~1871
Source father
● Household
· direct · ~0.92
Father
William Williams
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Ella Williams
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ella Williams
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lillian Williams
Daughter · 1940 · age 22 · b. ~1918 · Delaware
★ You are viewing this record
Sibling
Edward Williams
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 — New-Castle-County, Delaware
Open full size
1940 US Federal Census — New-Castle-County, Delaware
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00545-00382)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Rutter | 18 | daughter | File-Clerk | Delaware |
| 2 | Doris M. Rutter | 16 | daughter | Machinist | Delaware |
| 3 | Rudolph Rohling | 24 | head | Machinist | Pennsylvania |
| 4 | Mary Rohling | 23 | wife | — | Delaware |
| 5 | Emmet Powell | 25 | head | Route-Salesman | Virginia |
| 6 | Thelma B. Powell | 26 | wife | — | Delaware |
| 7 | Eunice L. Wall | 47 | head | — | England |
| 8 | Roger Wall | 22 | son | Machinist | Delaware |
| 9 | Urban Wall | 20 | son | Helper | Delaware |
| 10 | Ernest Wall | 18 | son | — | Delaware |
| 11 | David Wall | 16 | son | — | Delaware |
| 12 | Nancy Wall | 10 | daughter | — | Delaware |
| 13 | Nathan Wall | 5 | son | — | Delaware |
| 14 | Lillian J. Owens | 65 | head | — | Delaware |
| 15 | Jennie Ella B. Owens | 85 | mother | — | Maryland |
| 16 | Aaron T. Rosander | 32 | boarder | Receiving-Clerk | Illinois |
| 17 | Harold Bray | 30 | boarder | Foreman | Delaware |
| 19 | Ella C. Williams | 58 | head | — | Maryland |
| 20 | Edward C. Williams | 25 | son | Carpenter | Delaware |
| 21 | Lillian E. Williams THIS PERSON | 22 | daughter | — | Delaware |
| 22 | George Williams | 31 | head | Shipping-Clerk | Delaware |
| 23 | Mary J. Williams | 30 | wife | — | Eire |
| 24 | Mary Ella Williams | 6 | daughter | — | Delaware |
| 25 | George D. Williams | 3 | son | — | Delaware |
| 26 | Elton C. Blake | 44 | head | Pipe-Fitter | Maryland |
| 27 | Ella Blake | 39 | wife | — | Delaware |
| 28 | Julian W. Blake | 17 | son | — | Delaware |
| 29 | Rosae Blake | 15 | girl | — | Delaware |
| 30 | Ruth Blake | 10 | girl | — | Delaware |
| 31 | Urban Thomas | 55 | lodger | Clerk | New Hampshire |
| 32 | Julia Blake | 69 | mother | — | Minnesota |
| 34 | Walter G. Long | 65 | head | — | Pennsylvania |
| 35 | Emma W. Long | 63 | wife | — | Delaware |
| 36 | Harold Tussey | 46 | head | Store-House Clerk | Delaware |
| 37 | Aimee S. Bowen | 64 | housekeeper | — | Maryland |
| 38 | Ennis Waller | 40 | head | Millwright | Maryland |
| 39 | Eva M. Waller | 46 | wife | — | Maryland |
| 40 | Roland W. Bartlett | 22 | step-son | — | New Jersey |
Pedigree Summary
Lillian + 1 sibling
Gen 1 · 5 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)