MC
Marion Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Marion Clark across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Clark |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marion | Age | Birth yr |
|---|---|---|---|---|
| Marion Clark | Daughter | — | 13 | ~1927 |
| Elizabeth Clark | Daughter | — | 12 | ~1928 |
| Daniel Clark | Head | — | 45 | ~1895 |
| Ieemaieena Clark | Spouse | — | 34 | ~1906 |
| Annasteen Clark | Daughter | — | 11 | ~1929 |
| Daniel Clark | Daughter | — | 2 | ~1938 |
| Danielle Clark | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Cook, Illinois
Daughter, age 4
Cook, Illinois · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Ohio |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 13
Cook-County, Illinois · implied b. ~1927 — 7 household members
| Surname | Clark |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| 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 Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marion Clark
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Danielle Clark
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annasteen Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Clark
Sibling · 1940 · age 2
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00960-01013)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Teresa Washington | 12 | Daughter | — | Illinois |
| 2 | John Washington | 10 | Son | — | Illinois |
| 3 | Susie Graham | 78 | Mother-in-law | — | Tennessee |
| 5 | Gaulene|Garlene Balthrop | 33 | Head | New Worker | Mississippi |
| 6 | Bernice Balthrop | 18 | Daughter | New Worker | Illinois |
| 7 | James Lee | 24 | Roomer | — | Illinois |
| 8 | Costella Phelps | 2 | Grandson | — | Illinois |
| 9 | Robert Ave Sunday | 47 | Head | Porter | Florida |
| 10 | Julia Sunday | 60 | Wife | — | Kentucky |
| 11 | Minnie Sunday | 19 | Daughter | Housemaid | Illinois |
| 12 | Daniel Clark | 45 | Head | Chauffeur | Georgia |
| 13 | Ieema|Ieena Clark | 34 | Wife | — | British West Indies |
| 14 | Marion Clark THIS PERSON | 13 | Daughter | — | Illinois |
| 15 | Elizabeth Clark | 12 | Daughter | — | Illinois |
| 16 | Annasteen Clark | 11 | Daughter | — | New York |
| 17 | Daniel, Florent Clark | 2 | Daughter | — | Illinois |
| 18 | Danielle Clark | 1 | Daughter | — | Illinois |
| 19 | Thomas Keith | 27 | Head | Interviewer | Illinois |
| 20 | Izolla Keith | 30 | Wife | Housemaid | Georgia |
| 21 | Wayman Block | 31 | Brother-in-law | Porter | No. Dakota |
| 22 | Lillian Block | 28 | Sister-in-law | Sorter | Georgia |
| 23 | Alphonso Stokes | 33 | Nephew | Packer | Georgia |
| 24 | Sallie Mae Stokes | 30 | Niece | Power Mach. Op. | Georgia |
| 25 | Wiley Thomas | 62 | Head | Watchman | Mississippi |
| 26 | Estella Thomas | 58 | Wife | — | Mississippi |
| 27 | William Waller | 42 | Head | Laborer | Alabama |
| 28 | Mayme Maiden | 43 | Head | — | Tennessee |
| 29 | James Maiden | 19 | Son | Laborer | Illinois |
| 30 | Oscar Maiden | 18 | Son | Laborer | Illinois |
| 31 | Helen Maiden | 15 | Daughter | — | Illinois |
| 32 | Eddie Maiden | 14 | Son | — | Illinois |
| 33 | Albert Maiden | 13 | Son | — | Illinois |
| 34 | Ruth Maiden | 10 | Daughter | — | Illinois |
| 35 | Junnie|Jennie Maiden | 8 | Daughter | — | Illinois |
| 37 | Robert Bryant | 39 | Head | Hooker | Mississippi |
| 38 | Annabelle Bryant | 40 | Wife | — | Mississippi |
| 39 | Wayne Murray | 43 | Brother-in-law | Butcher | Mississippi |
| 40 | Mayme Murray | 34 | Sister-in-law | — | Mississippi |
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)