TJ
Theodore Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Theodore Johnson across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents John & Martha — first a son (b.~1902), then head of a 4-person household.
Age 28
b. ~1902
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Johnson |
| Given Name | Theodore Q |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Salesman |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Salesman |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1902 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Theodore | Age | Birth yr |
|---|---|---|---|---|
| Theodore Johnson | Head | — | 58 | ~1872 |
| Theodore Johnson | Son | — | 28 | ~1902 |
| Howard Johnson | Son | — | 30 | ~1900 |
| Helen Johnson | Spouse | — | 50 | ~1880 |
Census Appearances
1910
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1903 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Swed Swedish |
| Mother's Birthplace | Swed Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Theodore E. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 28
Cook, Illinois · implied b. ~1902 — 4 household members
| Surname | Johnson |
| Given Name | Theodore Q |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Salesman |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Theodore Johnson across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and mother Martha Johnson (~0.92 confidence) and father Theodore Johnson (~0.92 confidence) and father Theodore Johnson (~0.92 confidence) and mother Helen Johnson (~0.92 confidence) and mother Helen Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Martha Johnson
b. ~1865
Source mother
● Household
· direct · ~0.92
Father
Theodore Johnson
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Theodore Johnson
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Helen Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Helen Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Theodore Johnson
Son · 1930 · age 28 · b. ~1902 · Illinois
★ You are viewing this record
Sibling
Howard Johnson
Sibling · 1930 · age 30
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel425:0590)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Victor Nelson | 50 | Head | Contractor | Sweden |
| 2 | Edith Nelson | 42 | Wife | — | Sweden |
| 3 | Paul Nelson | 19 | Son | Clerical | Illinois |
| 4 | Mildred Nelson | 17 | Daughter | — | Illinois |
| 5 | Dorothy Nelson | 15 | Daughter | — | Illinois |
| 6 | Elaine Nelson | 6 | Daughter | — | Illinois |
| 7 | David Hildre | 33 | Head | Salesman | Scotland |
| 8 | Marian Hildre | 27 | Wife | — | Wisconsin |
| 9 | Charles Hildre | 0 | Son | — | Illinois |
| 10 | Julius Cohn | 32 | Head | Salesman | Germany |
| 11 | Rose Cohn | 30 | Wife | — | Missouri |
| 12 | Margret H Cohn | 3 | Daughter | — | Illinois |
| 13 | Harry Pohl | 31 | Head | Salesman | Austria |
| 14 | Constance Pohl | 31 | Wife | — | Illinois |
| 15 | Harry Pohl | 1 | Son | — | Illinois |
| 16 | Harry Rinnman | 34 | Head | Salesman | Sweden |
| 17 | Edith Rinnman | 31 | Wife | — | Illinois |
| 18 | Robert Rinnman | 12 | Son | — | Illinois |
| 19 | Natalie Rinnman | 6 | Daughter | — | Illinois |
| 20 | Vesta Rinnman | 3 | Daughter | — | Illinois |
| 21 | Alice Rinnman | 1 | Daughter | — | Illinois |
| 22 | Reuben Eklund | 32 | Head | Dressmaker | Sweden |
| 23 | Judith Eklund | 31 | Wife | Secretary | Illinois |
| 24 | Charles Q Paulson | 60 | Head | Clerical | Canada English |
| 25 | Grace H Paulson | 55 | Wife | — | Illinois |
| 26 | Robert E Paulson | 25 | Son | Salesman | Illinois |
| 27 | Richard L Paulson | 10 | Son | — | Illinois |
| 28 | Samuel C Stray | 34 | Head | Truck Driver | Pennsylvania |
| 29 | Jeanette Stray | 34 | Wife | — | Illinois |
| 30 | Thomas G Hughes | 46 | Head | Civil Engineer | England |
| 31 | Esther Hughes | 48 | Wife | — | California |
| 32 | Eleanor M Hughes | 11 | Daughter | — | Illinois |
| 33 | Theodore J Hughes | 2 | Son | — | Illinois |
| 34 | Theodore A Johnson | 58 | Head | Druggist | Illinois |
| 35 | Helen Johnson | 50 | Wife | — | Illinois |
| 36 | Howard T Johnson | 30 | Son | Salesman | Illinois |
| 37 | Theodore Q Johnson THIS PERSON | 28 | Son | Salesman | Illinois |
| 38 | Daniel Perry | 47 | Head | Sales Engineer | Illinois |
| 39 | Margaret Perry | 40 | Wife | — | Nebraska |
| 40 | Daniel Perry | 15 | Son | — | Illinois |
| 41 | Eleanor Perry | 13 | Daughter | — | Illinois |
| 42 | Thomas Ferguson | 64 | Head | Janitor | Scotland |
| 43 | Quinnivie M Ferguson | 45 | Wife | — | New York |
| 44 | Charles Ettinger | 25 | Head | Civil Engineer | Illinois |
| 45 | Lillian A Ettinger | 28 | Wife | — | Illinois |
| 46 | Charles A Ettinger | 5 | Son | — | Illinois |
| 47 | Paul W Ettinger | 3 | Son | — | Illinois |
| 48 | Paul Steininger | 32 | Head | Secretary | Illinois |
| 49 | Elmer G Lund | 38 | Head | Salesman | Illinois |
| 50 | Bertha Lund | 35 | Wife | — | Illinois |
Pedigree Summary
Theodore + 1 sibling
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 1930 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)