LJ
Lucille Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Lucille Johnson across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Carolina & William — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Johnson |
| Given Name | Lucille |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | No Farms in this E.D. |
| 1935 Residence (County) | Phila. |
| Additional Details | |
| Occupation | House work |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | House Work |
| Township / Ward | No Farms In This Ed |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lucille | Age | Birth yr |
|---|---|---|---|---|
| Caroline Johnson | Daughter | — | 17 | ~1923 |
| Justine Johnson | Daughter | — | 22 | ~1918 |
| Lucille Johnson | Daughter | — | 26 | ~1914 |
| Carolina Johnson | Head | — | 54 | ~1886 |
| Howard Johnson | Son | — | 19 | ~1921 |
| Lynwood Johnson | Son | — | 21 | ~1919 |
Census Appearances
Daughter, age 5
Philadelphia, Pennsylvania · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lucile |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Other, age 15
Philadelphia, Pennsylvania · implied b. ~1915 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lucille |
| Relationship to Head | Step-daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Daughter, age 26
Philadelphia-County, Pennsylvania · implied b. ~1914 — 6 household members
| Surname | Johnson |
| Given Name | Lucille |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | No Farms in this E.D. |
| 1935 Residence (County) | Phila. |
| Occupation | House work |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Lucille Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Carolina Johnson (~0.92 confidence) and father William Duckett (~0.92 confidence) and mother Ethel Duckett (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Carolina Johnson
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
William Duckett
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Ethel Duckett
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lucille Johnson
Daughter · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Justine Johnson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lynwood Johnson
Sibling · 1940 · age 21
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03704-00110)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carolina Johnson | 54 | Head | House Work | North Carolina |
| 42 | Lucille Johnson THIS PERSON | 26 | Daughter | House Work | Pennsylvania |
| 43 | Lynwood Johnson | 21 | Son | Helper | Pennsylvania |
| 44 | Justine Johnson | 22 | Daughter | Housework | Pennsylvania |
| 45 | Howard Johnson | 19 | Son | Elevator Operator | Pennsylvania |
| 46 | Caroline Johnson | 17 | Daughter | Unemployed | Pennsylvania |
| 47 | John H. Bell | 51 | Head | Janitor | Delaware |
| 48 | Elizabeth Bell | 56 | Wife | Housewife | Maryland |
| 49 | Josephine Chambers | 43 | Sister | Housework | Maryland |
| 50 | Marvin George Duckrey | 35 | Head | Letter Carrier | Pennsylvania |
| 51 | Carrie Elizabeth Duckrey | 34 | Wife | Housewife | Virginia |
| 52 | Dorothy Elizabeth Duckrey | 15 | Daughter | — | Pennsylvania |
| 53 | Florence Sarah Duckrey | 13 | Daughter | — | Pennsylvania |
| 54 | Harold Marvin Duckrey | 11 | Son | — | Pennsylvania |
| 55 | Lydia Duckrey | 9 | Daughter | — | Pennsylvania |
| 56 | Arnold Marvin Duckrey | 7 | Son | — | Pennsylvania |
| 57 | Jack Marvin Duckrey | 5 | Son | — | Pennsylvania |
| 58 | Roscoe Green | 36 | Head | Tubemaker | Virginia |
| 59 | Mabel Green | 36 | Wife | Housewife | Virginia |
| 60 | James H. Kelch | 47 | Head | Cook | South Carolina |
| 61 | Birdie Kelch | 41 | Wife | Housewife | South Carolina |
| 62 | Helen Kelch | 20 | Daughter | Secretary | Pennsylvania |
| 63 | Ruth Kelch | 18 | Daughter | Secretary | Pennsylvania |
| 64 | Evelyn Kelch | 15 | Daughter | — | Pennsylvania |
| 65 | Nancy Kelch | 3 | Daughter | — | Pennsylvania |
| 66 | James Jr. Kelch | 1 | Son | — | Pennsylvania |
| 67 | George Smith | 66 | Father in Law | Stableman | South Carolina |
| 68 | Eliza Smith | 65 | Mother in Law | Housewife | South Carolina |
| 69 | Samuel Campbell | 40 | Head | Landscape Gardener | Virginia |
| 70 | Marie Campbell | 33 | Wife | Housework | Virginia |
| 71 | Samuel Campbell | 10 | Son | — | Pennsylvania |
| 72 | James Campbell | 9 | Son | — | Pennsylvania |
| 73 | Alma Marie Campbell | 7 | Daughter | — | Pennsylvania |
| 74 | Anna Mae Campbell | 7 | Daughter | — | Pennsylvania |
| 75 | Bernadine Campbell | 1 | Daughter | — | Pennsylvania |
| 76 | Rose Mclaughlen | 43 | Boarder | Domestic | Virginia |
| 77 | Anna H. Taylor | 39 | Head | Housework | West Virginia |
| 78 | Pearl Paray | 22 | Niece | Domestic | West Virginia |
| 79 | Over Estimated Cancelled | None | Family | — | — |
Related Census Records
Pedigree Summary
Lucille + 4 siblings
Gen 1 · 3 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)