MS
Marion Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Marion Smith across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Anton & Clara — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Smith |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1912 |
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 1940 census.
| Name | Relation to head | Relative to Marion | Age | Birth yr |
|---|---|---|---|---|
| Marion Smith | Daughter | — | 28 | ~1912 |
| Anton Rudolph | Head | — | 60 | ~1880 |
| William Smith | Other | — | 29 | ~1911 |
| Clara Rudolph | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Cook, Illinois
Daughter, age 8
Cook, Illinois · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| 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
Daughter, age 18
Cook, Illinois · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 28
Cook-County, Illinois · implied b. ~1912 — 4 household members
| Surname | Smith |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Marion Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Anton Rudolph (~0.92 confidence) and mother Clara Rudolph (~0.92 confidence) and father John Smith (~0.92 confidence) and father John Smith (~0.92 confidence) and mother Marie Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Anton Rudolph
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Clara Rudolph
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
John Smith
b. ~1888
Source father
● Household
· direct · ~0.92
Father
John Smith
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Marie Smith
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Marion Smith
Daughter · 1940 · age 28 · b. ~1912 · 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-t0627-01000-00255)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Jacobson | 58 | Head | — | Illinois |
| 42 | John Jacobson | 30 | Son | Shipping Clerk | Illinois |
| 43 | Harold Jacobson | 34 | Head | Clerk | Illinois |
| 44 | Irene Jacobson | 30 | Wife | — | Illinois |
| 45 | Helen Jacobson | 7 | Daughter | — | Illinois |
| 46 | Marion Jacobson | 5 | Daughter | — | Illinois |
| 47 | Ralph Zimmerman | 31 | Head | Machinist | Illinois |
| 48 | Hermina Knutsen | 49 | Head | — | Illinois |
| 49 | May Knutsen | 29 | Daughter | Bookkeeper | Illinois |
| 50 | Harold Knutsen | 23 | Son | Salesman | Illinois |
| 51 | Alan Knutsen | 11 | Son | — | Illinois |
| 52 | Barbara Carlson | 5 | Daughter | — | Illinois |
| 53 | Henry Magnuson | 61 | Head | Laborer | Sweden |
| 54 | Hannah Magnuson | 61 | Wife | — | Sweden |
| 55 | Elmer Magnuson | 22 | Son | Printer | Illinois |
| 56 | Johanna Hellquist | 56 | Sister | — | Sweden |
| 57 | Margaret Carlson | 32 | Niece | Switchboard Oper. | Illinois |
| 58 | Violet Carlson | 9 | Grand Niece | — | Illinois |
| 59 | Daisy Carlson | 1 | Grand Niece | — | Illinois |
| 60 | John Neyher | 69 | Head | Salesman | Wisconsin |
| 61 | Mary Neyher | 59 | Wife | — | Germany |
| 62 | Elizabeth Milmo | 45 | Sister-in-law | Stenographer | Illinois |
| 63 | George Kaiser | 60 | Head | Laborer | Germany |
| 64 | Katie Kaiser | 61 | Wife | — | Germany |
| 65 | Louise Kaiser | 27 | Daughter | Stenographer | Illinois |
| 66 | Joseph Huecher | 60 | Head | Mechanic | Illinois |
| 67 | Emma Huecher | 56 | Wife | — | Illinois |
| 68 | Augusta Hildebrandt | 84 | Mother-in-law | — | Germany |
| 69 | Anton Rudolph | 60 | Head | Construction Foreman | Pennsylvania |
| 70 | Clara Rudolph | 55 | Wife | — | Ohio |
| 71 | William Smith | 29 | Son-in-law | — | Illinois |
| 72 | Marion Smith THIS PERSON | 28 | Daughter | — | Illinois |
| 73 | Augustine Gash | 52 | Head | Bookkeeper | Hungary |
| 74 | Emily Gash | 45 | Wife | Cook | Illinois |
| 75 | Ernest Gash | 16 | Son | — | Illinois |
| 76 | Helen Gash | 15 | Daughter | — | Illinois |
| 77 | Joseph Borer | 74 | Head | — | Canada-English |
| 78 | Prilla Borer | 71 | Sister | — | Canada-English |
| 79 | Edwin Schillinger | 47 | Head | Salesman | Missouri |
| 80 | Marie Schillinger | 45 | Wife | — | Illinois |
Pedigree Summary
Marion
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)