TJ
Thelma Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Thelma Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Sarah & Albert — first a daughter (b.~1916), then head of a 2-person household.
Age 24
b. ~1916
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Thelma L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1916 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Johnson | Daughter | — | 24 | ~1916 |
| Albert Johnson | Head | — | 55 | ~1885 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 3
Baltimore, Maryland · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 13
Baltimore, Maryland · implied b. ~1917 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Nurse Girl |
| Industry | Private family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 24
Baltimore-City-County, Maryland · implied b. ~1916 — 2 household members
| Surname | Johnson |
| Given Name | Thelma L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Thelma Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Sarah Jackson (~0.82 confidence) and father Albert Johnson (~0.92 confidence) and father Howard Johnson (~0.92 confidence) and mother Veronia Johnson (~0.92 confidence) and father Joseph Johnson (~0.92 confidence) and mother Ozie Johnson (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.9
Mother
Sarah Jackson
b. ~1872
Source father>mother
● Household
· direct · ~0.82
Father
Albert Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Howard Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Veronia Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
Joseph Johnson
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Ozie Johnson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Johnson
Daughter · 1940 · age 24 · b. ~1916 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01527-00530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James T. Russell | 20 | Son | Apprentice | Maryland |
| 42 | Elizabeth Russell | 17 | Daughter | Packer | Maryland |
| 43 | James Kline | 32 | Head | Foreman | Virginia |
| 44 | Eleanora Kline | 25 | Wife | — | Maryland |
| 45 | Bette Kline | 3 | Daughter | — | Maryland |
| 46 | John L. Weyer | 35 | Head | Manager | Maryland |
| 47 | Virginia Weyer | 30 | Wife | Boy Maker | Maryland |
| 48 | Francis M. Warren | 31 | Head | Salesman | Maryland |
| 49 | Thelma M. Warren | 27 | Wife | — | Maryland |
| 50 | Phyllis Warren | 5 | Daughter | — | Maryland |
| 51 | Edith A. Baker | 48 | Head | — | Maryland |
| 52 | Dewey L. Critzer | 37 | Head | Carpenter | Virginia |
| 53 | Lottie L. Critzer | 36 | Wife | — | Virginia |
| 54 | Marjorie Critzer | 16 | Daughter | — | Virginia |
| 55 | Elwood Critzer | 8 | Son | — | Virginia |
| 56 | Reginald Critzer | 19 | Brother | Helper | Virginia |
| 57 | Donald Hussey | 18 | Head | Helper | Maryland |
| 58 | Elva Hussey | 18 | Wife | — | Maryland |
| 59 | Albert Johnson | 55 | Head | Policeman | Illinois |
| 60 | Thelma L. Johnson THIS PERSON | 24 | Daughter | — | Maryland |
| 61 | Margaret L. Price | 40 | Head | Waitress | Maryland |
| 62 | John L. Westcott | 63 | Lodger | Accountant | Maryland |
| 63 | Kirk R. Headley | 62 | Head | Commissioner | Virginia |
| 64 | Alby C. Headley | 61 | Wife | — | Virginia |
| 65 | Virginia Bookland | 28 | Daughter | Bookkeeper | Maryland |
| 66 | Grace Fairbanks | 66 | Head | Bookkeeper | Maryland |
| 67 | George F. Grasemyer | 42 | Head | Electrician | Pennsylvania |
| 68 | Gladys E. Grasemyer | 40 | Wife | Sales Lady | Maryland |
| 69 | Merle F. Lynch | 21 | Step-son | Finisher | Maryland |
| 70 | Shirley E. Lynch | 18 | Daughter | — | Maryland |
| 71 | Noma E. Lynch | 16 | Daughter | — | Maryland |
| 72 | Marion E. Schroeder | 27 | Head | Taxi Driver | Maryland |
| 73 | Geraldine Schroeder | 23 | Wife | — | Maryland |
| 74 | Gain Robert Schroeder | 3 | Son | — | Maryland |
| 75 | Pembroke Schroeder | 21 | Brother | — | Maryland |
| 76 | Margaret Sincose | 23 | Head | Waitress | Maryland |
| 77 | Frank A. King | 51 | Head | Electrician | Maryland |
| 78 | Helen King | 48 | Wife | — | Maryland |
| 79 | Ellen C. Gilbert | 42 | Head | Nurse | Maryland |
| 80 | Samuel Norbeck | 40 | Lodger | Laborer | Pennsylvania |
Related Census Records
Pedigree Summary
Thelma
Gen 1 · 5 parents
~0.92
Gen 2 · 1 grandparents
~0.82
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)