MW
Marjorie Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Marjorie Williams across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Williams |
| Given Name | Marjorie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mishawaka |
| 1935 Residence (County) | St. Joseph |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Indiana |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marjorie | Age | Birth yr |
|---|---|---|---|---|
| Florence Williams | Spouse | — | 42 | ~1898 |
| Marjorie Williams | Daughter | — | 13 | ~1927 |
| Isabelle Williams | Daughter | — | 18 | ~1922 |
| Dorothy Williams | Daughter | — | 17 | ~1923 |
| Maynard Williams | Head | — | 44 | ~1896 |
| John Williams | Son | — | 12 | ~1928 |
Census Appearances
1930
Cook, Illinois
Daughter, age 2
Cook, Illinois · implied b. ~1928 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wales |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 13
Cook-County, Illinois · implied b. ~1927 — 6 household members
| Surname | Williams |
| Given Name | Marjorie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mishawaka |
| 1935 Residence (County) | St. Joseph |
| Highest Grade | 6 |
| 1935 Residence | Indiana |
| 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 Marjorie Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marjorie Williams
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Isabelle Williams
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Williams
Sibling · 1940 · age 12
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-t0627-00975-00231)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruth Serns | 6 | daughter | — | Illinois |
| 2 | George W. Bliss | 67 | Head | Interior Decorator | Illinois |
| 3 | Nellie Bliss | 62 | wife | — | Illinois |
| 4 | Fred Moore | 41 | Head | Laborer | Missouri |
| 5 | Lillian Moore | 38 | wife | — | England |
| 6 | Fred Jr. Moore | 20 | son | Machine Operator | Arkansas |
| 7 | Clarice Moore | 19 | daughter | Check Room | Arkansas |
| 8 | Betty L. Moore | 16 | daughter | — | Arkansas |
| 9 | William Moore | 14 | son | — | Arkansas |
| 10 | Opalene Moore | 9 | daughter | — | Arkansas |
| 11 | Thomas Moore | 2 | son | — | Illinois |
| 12 | Loretta Moore | 0 | daughter | — | Illinois |
| 13 | Frank Wetter | 64 | Head | Laborer | Pennsylvania |
| 14 | Mary Wetter | 62 | wife | — | Missouri |
| 15 | James Snow | 64 | son | — | Missouri |
| 16 | Thomas Mcmeans | 57 | Lodger | Mattress Maker | Indiana |
| 17 | John Manning | 74 | Head | — | Indiana |
| 18 | Harry Manning | 44 | son | Laborer | Indiana |
| 19 | Maynard Williams | 23 | Head | Lubricator | Tennessee |
| 20 | Roberta Williams | 21 | wife | — | Illinois |
| 21 | Maynard M. Williams | 1 | son | — | Illinois |
| 22 | Albert Brown | 30 | Head | Proprietor | Illinois |
| 23 | Emily Brown | 26 | wife | — | Illinois |
| 24 | Guy Whropshire | 34 | Head | Automobile Mechanic | Kentucky |
| 25 | Dell Whropshire | 36 | wife | Winder | Tennessee |
| 26 | John Bogosian | 70 | Head | — | Turkey |
| 27 | Mary Bogosian | 54 | wife | — | Turkey |
| 28 | Ann Bogosian | 16 | daughter | — | Illinois |
| 29 | Guy Conti | 29 | Head | Laborer | New York |
| 30 | Ethel Conti | 30 | wife | — | Kentucky |
| 31 | Lulu Conti | 7 | daughter | — | Illinois |
| 32 | Angelina Conti | 5 | daughter | — | Kentucky |
| 33 | Rosemary Conti | 3 | daughter | — | Kentucky |
| 34 | Guy Jr. Conti | 0 | son | — | Illinois |
| 35 | Maynard Sr. Williams | 44 | Head | Telegraph Operator | Tennessee |
| 36 | Florence Williams | 42 | wife | — | Tennessee |
| 37 | Isabelle Williams | 18 | daughter | Waitress | Illinois |
| 38 | Dorothy Williams | 17 | daughter | Waitress | Illinois |
| 39 | Marjorie Williams THIS PERSON | 13 | daughter | — | Illinois |
| 40 | John Williams | 12 | son | — | 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)