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 Arthur & Herbert — first a spouse (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1906 |
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 Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Johnson | Daughter | — | 16 | ~1924 |
| Thaddeus Johnson | Head | — | 40 | ~1900 |
| Thelma Johnson | Spouse | — | 34 | ~1906 |
Census Appearances
1920
None, Maryland
Daughter, age 13
None, Maryland · implied b. ~1907 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 24
Baltimore, Maryland · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thelma J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 34
Baltimore-City-County, Maryland · implied b. ~1906 — 3 household members
| Surname | Johnson |
| Given Name | Thelma |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| 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 3 locations, using XGBoost record linkage. Identified parents: father Arthur Johnson (~0.92 confidence) and father Herbert Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Herbert Johnson
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Johnson
Spouse · 1940 · age 34 · b. ~1906 · 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-t0627-01540-00384)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine Lawrence | 60 | Head | — | Maryland |
| 2 | Samuel Lawrence | 22 | Son | Clerk | Maryland |
| 3 | Agnes Heim | 30 | Daughter | Seamstress | Maryland |
| 4 | June Heim | 9 | Granddaughter | — | Maryland |
| 5 | Silver Conn | 58 | Head | Leader Of Recreation | Maryland |
| 6 | Lillian Conn | 40 | Wife | — | Maryland |
| 7 | Irene Conn | 16 | Daughter | — | Maryland |
| 8 | Charles Conn | 14 | Son | — | Maryland |
| 9 | Thaddeus Johnson | 40 | Head | Operator | Maryland |
| 10 | Thelma Johnson THIS PERSON | 34 | Wife | — | Maryland |
| 11 | Thelma Johnson | 16 | Daughter | — | Maryland |
| 12 | John Mooney | 36 | Head | Truck Driver | Maryland |
| 13 | Edith Mooney | 27 | Wife | — | Maryland |
| 14 | Mary Mooney | 7 | Daughter | — | Maryland |
| 15 | John Mooney | 5 | Son | — | Maryland |
| 16 | Gertrude Mooney | 1 | Daughter | — | Maryland |
| 17 | William Hedrick | 11 | Step-son | — | Maryland |
| 18 | Irving Gill | 32 | Head | Painter | Maryland |
| 19 | Eleanor Gill | 27 | Wife | — | Maryland |
| 20 | Donald Gill | 7 | Son | — | Maryland |
| 21 | Edward Gill | 5 | Son | — | Maryland |
| 22 | Jacob Teal | 31 | Brother-in-law | Carpenter | Maryland |
| 23 | John Doxzon | 44 | Head | — | Maryland |
| 24 | Sara Doxzon | 31 | Wife | — | Pennsylvania |
| 25 | Leroy Doxzon | 13 | Son | — | Maryland |
| 26 | Bessie Doxzon | 12 | Daughter | — | Maryland |
| 27 | Eva Doxzon | 11 | Daughter | — | Maryland |
| 28 | Harry Doxzon | 9 | Son | — | Maryland |
| 29 | Wesley Doxzon | 5 | Son | — | Maryland |
| 30 | Beulah Doxzon | 1 | Daughter | — | Maryland |
| 31 | Charles Simmons | 55 | Head | Salesman | Maryland |
| 32 | Mabel Simmons | 55 | Wife | — | Maryland |
| 33 | Charles Simmons | 22 | Son | Truck Driver | Maryland |
| 34 | Ruth Simmons | 23 | Daughter-in-law | — | Maryland |
| 35 | Charles Simmons | 1 | Grandson | — | Maryland |
| 36 | Thomas Blash | 37 | Son-in-law | Cab Driver | Maryland |
| 37 | Laura Blash | 30 | Daughter | — | Maryland |
| 38 | Charles W. Fosler | 28 | Head | Machinist | Maryland |
| 39 | Evelyn N. Fosler | 26 | Wife | Seamstress | Maryland |
| 40 | Betty Fosler | 4 | Daughter | — | Maryland |
Pedigree Summary
Thelma
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)