MS
Margaret Simpson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Simpson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Benjamin Simpson | Son | — | 12 | ~1928 |
| Mabel Simpson | Son | — | 20 | ~1920 |
| Ralph Simpson | Son | — | 15 | ~1925 |
| Luther Simpson | Son | — | 8 | ~1932 |
| Laughline Simpson | Son | — | 22 | ~1918 |
| Mable Simpson | Head | — | 47 | ~1893 |
| Edward Simpson | Son | — | 7 | ~1933 |
| Josephine Simpson | Daughter | — | 5 | ~1935 |
| Johnnie Simpson | Spouse | — | 44 | ~1896 |
| Mabel Simpson | Other | — | 22 | ~1918 |
| Margaret Simpson | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Cook, Illinois
Daughter, age 8
Cook, Illinois · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 18
Cook-County, Illinois · implied b. ~1922 — 11 household members
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 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 Margaret Simpson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Simpson
Daughter · 1940 · age 18 · b. ~1922 · Illinois
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Sibling
Laughline Simpson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Simpson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Benjamin Simpson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Luther Simpson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Simpson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Simpson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Simpson
Sibling · 1940 · age 5
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
40 people indexed on this census page (nara:1940:m-t0627-01006-00833)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clara Dickerson | 46 | Head | — | Mississippi |
| 2 | Marcelline Dickerson | 10 | Daughter | — | Arkansas |
| 3 | Lee Walton | 33 | Head | Stock Room | Oklahoma |
| 4 | Emma Walton | 33 | Wife | — | Arkansas |
| 5 | Lee Jr. Walton | 3 | Son | — | Illinois |
| 6 | Anna Rollins | 34 | Head | — | Tennessee |
| 7 | Roberta Rollins | 18 | Daughter | — | Illinois |
| 8 | Alfred Rollins | 12 | Son | — | Illinois |
| 9 | Robert Rollins | 10 | Son | — | Illinois |
| 10 | Hattie Rollins | 8 | Daughter | — | Illinois |
| 11 | Linwood Rollins | 5 | Son | — | Illinois |
| 12 | Josephine Stewart | 40 | Head | — | Louisiana |
| 13 | Velma Stewart | 18 | Daughter | New Worker | Louisiana |
| 14 | Richard Stewart | 16 | Son | — | Louisiana |
| 15 | Irene Mcclelland | 28 | Head | — | Mississippi |
| 16 | Sarah Moore | 17 | Niece | — | Arkansas |
| 17 | Ora Lee Exson | 4 | Niece | — | Arkansas |
| 18 | Joseph Moore | 2 | Nephew | — | Illinois |
| 19 | Mable Simpson | 47 | Head | Paper Cuter | Tennessee |
| 20 | Johnnie Simpson | 44 | Wife | — | Tennessee |
| 21 | Laughline Simpson | 22 | Son | Auto Mechanic | Tennessee |
| 22 | Mabel Simpson | 22 | Daughter-in-law | — | Arkansas |
| 23 | Mabel Jr. Simpson | 20 | Son | New Worker | Illinois |
| 24 | Margaret Simpson THIS PERSON | 18 | Daughter | — | Illinois |
| 25 | Ralph Simpson | 15 | Son | — | Illinois |
| 26 | Benjamin Simpson | 12 | Son | — | Illinois |
| 27 | Luther Simpson | 8 | Son | — | Illinois |
| 28 | Edward Simpson | 7 | Son | — | Illinois |
| 29 | Josephine Simpson | 5 | Daughter | — | Illinois |
| 30 | Julian Brown | 49 | Head | Chauffeur | Georgia |
| 31 | Mabel Brown | 38 | Wife | — | Illinois |
| 32 | Julian Jr. Brown | 12 | Son | — | Illinois |
| 33 | James W. Brown | 10 | Son | — | Illinois |
| 34 | William Brown | 2 | Son | — | Illinois |
| 35 | Willa-Mae Brown | 5 | Daughter | — | Illinois |
| 36 | Lovett, Ethel Bey | 21 | Head | — | Georgia |
| 37 | Susette Bey | 4 | Daughter | — | Illinois |
| 38 | Ben Bey | 2 | Son | — | Illinois |
| 39 | Sarah El-Hawe | 60 | Aunt | — | Georgia |
| 40 | Joseph Weaver | 47 | Head | Street Car | Kentucky |
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)