TJ
Thomas Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Thomas Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Thomas J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Catonsville |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | School Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 1400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Teacher |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Margaret Johnson | Daughter | — | 21 | ~1919 |
| Thomas Johnson | Head | — | 51 | ~1889 |
| Edward Johnson | Son | — | 26 | ~1914 |
| Thomas Johnson | Son | — | 27 | ~1913 |
| Margaret Johnson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Baltimore, Maryland
Son, age 7
Baltimore, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Birth State | Maryland |
| Birth Country | United States |
| Year of Naturalization | Yes |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 17
Baltimore, Maryland · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Thomas Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Helper |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 27
Baltimore-City-County, Maryland · implied b. ~1913 — 5 household members
| Surname | Johnson |
| Given Name | Thomas J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Catonsville |
| 1935 Residence (County) | Baltimore |
| Occupation | School Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 24 |
| Income (1939) | 1400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Maryland |
| 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 Thomas Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Johnson (~0.92 confidence) and father Thomas Johnson (~0.92 confidence) and father Thomas Johnson (~0.92 confidence) and mother Margaret Johnson (~0.92 confidence) and mother Jennie Johnson (~0.92 confidence) and mother Lottie Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Thomas Johnson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Thomas Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Margaret Johnson
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Jennie Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Lottie Johnson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Johnson
Son · 1940 · age 27 · b. ~1913 · Maryland
★ You are viewing this record
Sibling
Margaret Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Johnson
Sibling · 1940 · age 26
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 — 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-t0627-01533-00112)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ronald J. Wolff | 7 | Son | — | Maryland |
| 2 | George H. Gifford | 46 | Head | Fireman | Maryland |
| 3 | Mary B. Gifford | 33 | Wife | — | Maryland |
| 4 | Lottie M. Gifford | 10 | Daughter | — | Maryland |
| 5 | James B. Lundeen | 15 | Step-son | Chauffeur | Maryland |
| 6 | William F. Miller | 53 | Head | Conductor | Maryland |
| 7 | Mary V. Miller | 57 | Wife | — | Maryland |
| 8 | Charles R. Hammond | 51 | Head | Plumber | Ohio |
| 9 | Irene P. Hammond | 54 | Wife | — | Virginia |
| 10 | Charles A. Jr. Hammond | 20 | Son | Paper Machine Operator | Maryland |
| 11 | Dean Hammond | 17 | Son | Auto Mechanic Helper | Maryland |
| 12 | Holland Murphy | 48 | Head | — | Maryland |
| 13 | Helen A. Murphy | 46 | Wife | Seamstress | Maryland |
| 14 | Helen M. Murphy | 15 | Daughter | — | Maryland |
| 15 | Thelma F. Murphy | 12 | Son | — | Maryland |
| 16 | Bernard E. Murphy | 11 | Son | — | Maryland |
| 17 | Eloise M. Murphy | 8 | Daughter | — | Maryland |
| 18 | Thomas J. Johnson | 51 | Head | Ship Builder | Texas |
| 19 | Margaret E. Johnson | 45 | Wife | — | Maryland |
| 20 | Thomas J. Jr. Johnson THIS PERSON | 27 | Son | School Teacher | Maryland |
| 21 | Edward J. Johnson | 26 | Son | Instructor | Maryland |
| 22 | Margaret F. Johnson | 21 | Daughter | — | Maryland |
| 23 | Ellen C. Graff | 56 | Head | — | Ireland |
| 24 | Katherine Graff | 27 | Daughter | Typist | Maryland |
| 25 | Herbert Kirkman | 30 | Lodger | Shipping Clerk | Maryland |
| 26 | George Hartung | 58 | Head | Cabinet Maker | Maryland |
| 27 | Ada B. Hartung | 51 | Wife | — | Maryland |
| 28 | Naomi Hartung | 21 | Daughter | Binder | Maryland |
| 29 | Ada M. Hartung | 20 | Daughter | File Clerk | Maryland |
| 30 | George H. Hartung | 19 | Son | Printer'S Apprentice | Maryland |
| 31 | Ellen Hartung | 17 | Daughter | — | Maryland |
| 32 | Albert Inman | 50 | Head | Structural Steel | Maryland |
| 33 | Eleanor Inman | 45 | Wife | — | Maryland |
| 34 | Frances Inman | 19 | Daughter | — | Maryland |
| 35 | Albert Jr. Inman | 14 | Son | — | Maryland |
| 36 | Walter Crane | 50 | Head | Tool Maker | Maryland |
| 37 | Ellen Crane | 44 | Wife | — | Maryland |
| 38 | Walter Jr. Crane | 9 | Son | — | Maryland |
| 39 | Mary C. Crane | 6 | Daughter | — | Maryland |
| 40 | Alice Finnerty | 52 | Lodger | Seamstress | Maryland |
Related Census Records
Pedigree Summary
Thomas + 2 siblings
Gen 1 · 6 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)