GJ
Gertrude Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lafayette-County, Louisiana
Our Model Tree links this Gertrude Johnson across the 1920, 1930 and 1940 US Censuses in Lafayette-County, Louisiana (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lafayette-County, Louisiana |
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Lafayette City |
| 1935 Residence (County) | Lafayette |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 349 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Teacher |
| Township / Ward | Lafayette City |
| Est. Birth Year | ~1911 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Robbie Johnson | Daughter | — | 22 | ~1918 |
| Gertrude Johnson | Daughter | — | 29 | ~1911 |
| Dorothy Johnson | Daughter | — | 17 | ~1923 |
| Sophie Johnson | Head | — | 57 | ~1883 |
| George Johnson | Son | — | 21 | ~1919 |
| Bernard Johnson | Son | — | 21 | ~1919 |
| Nathaniel Johnson | Son | — | 24 | ~1916 |
Census Appearances
1920
Lafayette, Louisiana
Daughter, age 7
Lafayette, Louisiana · implied b. ~1913 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Lafayette, Louisiana
Daughter, age 18
Lafayette, Louisiana · implied b. ~1912 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Lafayette-County, Louisiana
Daughter, age 29
Lafayette-County, Louisiana · implied b. ~1911 — 7 household members
| Surname | Johnson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Lafayette City |
| 1935 Residence (County) | Lafayette |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 349 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Gertrude Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Johnson (~0.92 confidence) and father William Johnson (~0.92 confidence) and mother Sophie Johnson (~0.92 confidence) and mother Sophie Johnson (~0.92 confidence) and mother Sophie Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnson
b. ~1868
Source father
● Household
· direct · ~0.92
Father
William Johnson
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Sophie Johnson
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Sophie Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Sophie Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Gertrude Johnson
Daughter · 1940 · age 29 · b. ~1911 · Louisiana
★ You are viewing this record
Sibling
George Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robbie Johnson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nathaniel Johnson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Johnson
Sibling · 1940 · age 17
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 — Lafayette-County, Louisiana
Open full size
1940 US Federal Census — Lafayette-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01409-00404)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Castell Mane | 72 | Head | — | Louisiana |
| 2 | Lucille Mane | 50 | Wife | Cook | Louisiana |
| 3 | Sam Coco | 39 | Head | Truck Driver | Louisiana |
| 4 | Anita Coco | 38 | Wife | — | Louisiana |
| 5 | Birdie Coco | 14 | Daughter | — | Louisiana |
| 6 | Inda Coco | 12 | Son | — | Louisiana |
| 7 | Marie Ann Coco | 10 | Daughter | — | Louisiana |
| 8 | Charles Anthony Coco | 7 | Son | — | Louisiana |
| 9 | Angela Coco | 4 | Daughter | — | Louisiana |
| 10 | Sophie Johnson | 57 | Head | — | Louisiana |
| 11 | Robbie Johnson | 22 | Daughter | Teacher | Louisiana |
| 12 | George Johnson | 21 | Son | Presser | Louisiana |
| 13 | Gertrude Johnson THIS PERSON | 29 | Daughter | Teacher | Louisiana |
| 14 | Nathaniel Johnson | 24 | Son | Porter | Louisiana |
| 15 | Bernard Johnson | 21 | Son | — | Louisiana |
| 16 | Dorothy Johnson | 17 | Daughter | — | Louisiana |
| 17 | Cornelius Mitchell | 37 | Head | Servant | Louisiana |
| 18 | Antoinette Mitchell | 31 | Wife | Waitress | Louisiana |
| 19 | Elay Ida Mitchell | 7 | Daughter | — | Louisiana |
| 20 | Enis Isadore Mitchell | 8 | Nephew | — | Louisiana |
| 21 | Homer Mitchell | 70 | Brother | Gardener | Louisiana |
| 22 | Riley Velma Mitchell | 11 | Niece | — | Louisiana |
| 23 | Gilbert Jean Mitchell | 5 | Niece | — | Louisiana |
| 24 | Robert Theodolany | 14 | Brother | Gardener | Louisiana |
| 25 | Isadore Betty Theodolany | 12 | Niece | — | Louisiana |
| 26 | Benedictine Leonard | 21 | Head | Servant | Louisiana |
| 27 | Clifton Bateman | 30 | Head | Merchant | Louisiana |
| 28 | Verna Bateman | 29 | Wife | Clerk | Louisiana |
| 29 | Patsy Jane Bateman | 8 | Daughter | — | Louisiana |
| 30 | Cecil Jr. Bateman | 4 | Son | — | Louisiana |
| 31 | Larry L. Bateman | 1 | Son | — | Louisiana |
| 32 | Hugh Prujean | 38 | Lodger | Shoe Repairer | Louisiana |
| 33 | Mathilda Prujean | 30 | Lodger | — | Louisiana |
| 34 | Delia Licky | 52 | Head | Merchant | Syria |
| 35 | Abel Bushy | 45 | Head | Brick Mason | Louisiana |
| 36 | Mabel Bushy | 35 | Wife | Servant | Louisiana |
| 37 | Dalton Bushy | 15 | Son | Delivery Boy | Louisiana |
| 38 | Junius Bushy | 4 | Son | — | Louisiana |
| 39 | Alex Thompson | 50 | Head | Owner | Louisiana |
| 40 | Junius Duke | 50 | Head | Musician | Louisiana |
Pedigree Summary
Gertrude + 5 siblings
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)