MF
Mary Ferguson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Ferguson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1908), then head of a 10-person household.
Age 32
b. ~1908
Female
Spouse
Born: Georgia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Ferguson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1908 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mildred Ferguson | Daughter | — | 5 | ~1935 |
| Mary Ferguson | Daughter | — | 7 | ~1933 |
| Louise Ferguson | Daughter | — | 11 | ~1929 |
| John Ferguson | Head | — | 37 | ~1903 |
| Thomas Ferguson | Son | — | 13 | ~1927 |
| Norman Ferguson | Son | — | 1 | ~1939 |
| William Ferguson | Son | — | 9 | ~1931 |
| John Ferguson | Son | — | 14 | ~1926 |
| Jeanne Ferguson | Son | — | 11 | ~1929 |
| Mary Ferguson | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Cook, Illinois
Other, age 23
Cook, Illinois · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ferguson |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Georgia |
| Age at First Marriage | 14 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Cook-County, Illinois
Spouse, age 32
Cook-County, Illinois · implied b. ~1908 — 10 household members
| Surname | Ferguson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | City of Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Mary Ferguson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Ferguson
Spouse · 1940 · age 32 · b. ~1908 · Illinois
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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-t0627-00977-00758)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Allen | 33 | Head | Laborer | Mississippi |
| 42 | Wife Allen | 29 | Wife | Beauty Culturist | Alabama |
| 43 | Mary Allen | 12 | Daughter | — | Illinois |
| 44 | Sallie Mitchell | 58 | Lodger | Floor Girl | Louisiana |
| 45 | Edward Murphy | 27 | Head | Janitor | Mississippi |
| 46 | Mary Murphy | 31 | Wife | — | Mississippi |
| 47 | Edward Jr. Murphy | 6 | Son | — | Illinois |
| 48 | Barbara A. Murphy | 4 | Daughter | — | Illinois |
| 49 | Emmitt Murphy | 2 | Son | — | Illinois |
| 50 | Frank Johnson | 35 | Head | Pullman Porter | Louisiana |
| 51 | Gertrude Taylor | 45 | Lodger | Cook | Illinois |
| 52 | Oglean Collins | 35 | Lodger | Laborer | Tennessee |
| 53 | Joseph Banks | 61 | Head | Laborer | Indiana |
| 54 | Agnes Banks | 59 | Wife | — | Germany |
| 55 | Elisha Harper | 33 | Head | Laborer | Mississippi |
| 56 | Flossie Harper | 26 | Wife | — | Georgia |
| 57 | Leesley Williams | 34 | Antonym | Laborer | Georgia |
| 58 | John Ferguson | 37 | Head | Laborer | Georgia |
| 59 | Mary Ferguson THIS PERSON | 32 | Wife | — | Georgia |
| 60 | John Ferguson | 14 | Son | — | Illinois |
| 61 | Thomas Ferguson | 13 | Son | — | Illinois |
| 62 | Louise Ferguson | 11 | Daughter | — | Illinois |
| 63 | Jeanne Ferguson | 11 | Son | — | Illinois |
| 64 | William Ferguson | 9 | Son | — | Illinois |
| 65 | Mary Ferguson | 7 | Daughter | — | Illinois |
| 66 | Mildred Ferguson | 5 | Daughter | — | Illinois |
| 67 | Norman Ferguson | 1 | Son | — | Illinois |
| 68 | Felton Thomas | 37 | Head | Laborer | Alabama |
| 69 | Rose Thomas | 28 | Wife | — | Alabama |
| 70 | Felton Jr. Thomas | 7 | Son | — | Illinois |
| 71 | Vanoil Thomas | 5 | Daughter | — | Illinois |
| 72 | Robt. Philpott | 32 | Head | Owner | Georgia |
| 73 | (End Of Block Three (3) And Three Begins Block (4) Six) Philpott | None | — | — | — |
| 74 | Morris Lilley | 53 | Head | Laborer | Texas |
| 75 | Mattie Lilley | 40 | Wife | — | Mississippi |
| 76 | Oates Toby | 34 | Lodger | — | Tennessee |
| 77 | William B. Bradley | 58 | Head | Laborer | Tennessee |
| 78 | Hattie Bradley | 54 | Wife | — | Tennessee |
| 79 | Minnie Ray | 25 | Step daughter | — | Tennessee |
| 80 | Juanita Ray | 10 | Grand daughter | — | Illinois |
Related Census Records
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)