BN
Bertha Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Bertha Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 6-person household.
Age 53
b. ~1887
Female
Head
Born: Sweden
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Oak Park |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | office clerk |
| Industry | public high school |
| Class of Worker | GW |
| Hours Worked | 12 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Office Clerk |
| Township / Ward | Oak Park |
| Est. Birth Year | ~1887 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Bertha Nelson | Head | — | 53 | ~1887 |
| Nelson Fletcher | Other | — | 1 | ~1939 |
| Judith Fletcher | Daughter | — | 4 | ~1936 |
| Mark Fletcher | Other | — | 37 | ~1903 |
| George Nelson | Son | — | 24 | ~1916 |
| Alice Nelson | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Cook, Illinois
Spouse, age 32
Cook, Illinois · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1907 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Cook, Illinois
Other, age 43
Cook, Illinois · implied b. ~1887 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 26 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Veteran | no |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Cook-County, Illinois
Head, age 53
Cook-County, Illinois · implied b. ~1887 — 6 household members
| Surname | Nelson |
| Given Name | Bertha |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Widowed |
| Birthplace | Sweden |
| 1935 Residence (City) | Oak Park |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | office clerk |
| Industry | public high school |
| Class of Worker | GW |
| Hours Worked | 12 |
| Income (1939) | 520 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Bertha Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Nelson
Head · 1940 · age 53 · b. ~1887 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00786-00247)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth Ackerman | 62 | Wife | — | Michigan |
| 42 | Ruth E. Ackerman | 25 | Daughter | — | Illinois |
| 43 | Fred Kalit | 43 | Head | Electrical Engineer | Norway |
| 44 | Catherine M. Kalit | 41 | Wife | Secretary | Germany |
| 45 | Herbert Pirwitz | 42 | Head | Salesman | Illinois |
| 46 | Elka Pirwitz | 41 | Wife | — | Illinois |
| 47 | Marlene Pirwitz | 5 | Daughter | — | Illinois |
| 48 | Edwin W. Stastny | 39 | Head | Proprietor Manager | Illinois |
| 49 | Josephine Stastny | 40 | Wife | — | New York |
| 50 | Edwin Jr. Stastny | 16 | Son | — | Illinois |
| 51 | Bertha Nelson THIS PERSON | 53 | Head | Office Clerk | Sweden |
| 52 | George Nelson | 24 | Son | Salesman | Illinois |
| 53 | Alice Nelson | 24 | Daughter | — | Wisconsin |
| 54 | Mark D. Fletcher | 37 | Son in law | Testman | Maryland |
| 55 | Judith Fletcher | 4 | Daughter | — | Illinois |
| 56 | Nelson Fletcher | 1 | Grandson | — | Illinois |
| 57 | John Homaighous | 52 | Head | Telephone Engineer | Ohio |
| 58 | Alice Homaighous | 51 | Wife | — | Ohio |
| 59 | Paul Homaighous | 23 | Son | Electrical Engineer | Minnesota |
| 60 | Charles Homaighous | 22 | Son | Mechanical Engineer | Minnesota |
| 61 | Fay Ab. Homaighous | 21 | Daughter | — | Illinois |
| 62 | Vera Ab. Homaighous | 20 | Daughter | — | Illinois |
| 63 | Mary Homaighous | 15 | Daughter | — | Illinois |
| 64 | Esther Homaighous | 7 | Daughter | — | Illinois |
| 65 | Edwin Dillon | 31 | Head | Purchasing Agent | Oklahoma |
| 66 | Eleanor Dillon | 27 | Wife | — | Illinois |
| 67 | David B. Dillon | 4 | Son | — | Illinois |
| 68 | Dennis L. Dillon | 2 | Son | — | Illinois |
| 69 | Wayne Van Stone | 33 | Head | Salesman | Indiana |
| 70 | Ida Van Stone | 27 | Wife | — | Illinois |
| 71 | Ida Mae Van Stone | 1 | Daughter | — | Illinois |
| 72 | Eberhart G. Stanelle | 58 | Head | Stationary Engineer | Wisconsin |
| 73 | Frances Stanelle | 57 | Wife | — | Iowa |
| 74 | Frances H. Stanelle | 20 | Daughter | Policy Writer | Illinois |
| 75 | Richard Spoo | 34 | Head | Butcher | Illinois |
| 76 | Emily Spoo | 31 | Wife | — | Illinois |
| 77 | Richard Spoo | 9 | Son | — | Illinois |
| 78 | Kenneth Spoo | 5 | Son | — | Illinois |
| 79 | Clara O'Hessini | 55 | Head | — | Illinois |
| 80 | Will O'Hessini | 26 | Son | Attendant | Illinois |
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)