MS
Margaret Simpson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Margaret Simpson across the 1920, 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed), with identified parents Harry & Harry — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet |
| 1935 Residence (County) | Will |
| Additional Details | |
| Occupation | Receptionist |
| Industry | Dr. Office |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 450 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Receptionist |
| Township / Ward | Joliet |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| H Simpson | Son | — | 23 | ~1917 |
| Harriett Simpson | Spouse | — | 45 | ~1895 |
| Elvera Simpson | Daughter | — | 23 | ~1917 |
| Harry Simpson | Head | — | 48 | ~1892 |
| Margaret Simpson | Daughter | — | 21 | ~1919 |
Census Appearances
1920
Will, Illinois
Daughter, age 1
Will, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sampson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Will, Illinois
Daughter, age 11
Will, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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
Will-County, Illinois
Daughter, age 21
Will-County, Illinois · implied b. ~1919 — 5 household members
| Surname | Simpson |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet |
| 1935 Residence (County) | Will |
| Occupation | Receptionist |
| Industry | Dr. Office |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 450 |
| Highest Grade | H 4 |
| 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 Margaret Simpson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Sampson (~0.92 confidence) and father Harry Simpson (~0.92 confidence) and father Harry Simpson (~0.92 confidence) and mother Harriet Sampson (~0.92 confidence) and mother Harriett Simpson (~0.92 confidence) and mother Hattie Simpson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Sampson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Harry Simpson
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Harry Simpson
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Harriet Sampson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Harriett Simpson
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Hattie Simpson
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Simpson
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
H Simpson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elvera Simpson
Sibling · 1940 · age 23
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 — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00908-00345)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Mcbride | 30 | Head | Machine Operator | Illinois |
| 42 | Bernice Mcbride | 27 | Wife | — | Illinois |
| 43 | Jack Mcbride | 4 | Son | — | Illinois |
| 44 | Kathleen Mcbride | 1 | Daughter | — | Illinois |
| 45 | William S. Ward | 30 | Head | Engr. Color Mixer | Illinois |
| 46 | Helen Ward | 26 | Wife | — | Illinois |
| 47 | Nancy Ward | 4 | Daughter | — | Illinois |
| 48 | Suzanne Ward | 1 | Daughter | — | Illinois |
| 49 | Cecile Ward | 50 | Mother | — | Nebraska |
| 50 | Regina Thompson | 81 | Head | — | Norway |
| 51 | George Ahlberg | 41 | Son-in-law | Office Clerk | Illinois |
| 52 | Regina Ahlberg | 39 | Daughter | — | Illinois |
| 53 | Phyllis Ahlberg | 14 | Grand-daughter | — | Illinois |
| 54 | John Will | 67 | Head | Watchman | Illinois |
| 55 | Sarah Will | 54 | Wife | — | Illinois |
| 56 | Fern Will | 32 | Daughter | Comptometer | Iowa |
| 57 | Antoinette Data | 63 | Head | — | Italy |
| 58 | John Anselmino | 34 | Son-in-law | Proprietor | Illinois |
| 59 | Jean Anselmino | 32 | Daughter | — | Italy |
| 60 | Betty Jean Anselmino | 6 | Daughter | — | Illinois |
| 61 | Jacqueline Anselmino | 3 | Daughter | — | Illinois |
| 62 | Phillip Anselmino | 28 | Roomer | Clerk | Illinois |
| 63 | Harry B. Simpson | 48 | Head | Custodian | Illinois |
| 64 | Harriett Simpson | 45 | Wife | — | Illinois |
| 65 | Margaret Simpson THIS PERSON | 21 | Daughter | Receptionist | Illinois |
| 66 | H. Fred Simpson | 23 | Son | Stock-Man | Illinois |
| 67 | Elvera Simpson | 23 | Daughter | — | Illinois |
| 68 | Anna Reynolds | 70 | Head | — | Illinois |
| 69 | Katherine Reynolds | 60 | Sister | — | Illinois |
| 70 | Ellen Nolan | 50 | Sister | — | Illinois |
| 71 | Frank Bossi | 44 | Head | Stove Mounter | Illinois |
| 72 | Victoria Bossi | 38 | Wife | — | Illinois |
| 73 | Kathryn Bossi | 2 | Daughter | — | Illinois |
| 74 | Robert Chamberlain | 26 | Head | Printer | Illinois |
| 75 | Edna Chamberlain | 25 | Wife | — | Illinois |
| 76 | Robert Chamberlain | 4 | Son | — | Illinois |
| 77 | Richard Chamberlain | 3 | Son | — | Illinois |
| 78 | Judith A. Chamberlain | 1 | Daughter | — | Illinois |
| 79 | Carl Melitello | 46 | Head | Labor | Italy |
| 80 | Josephine Melitello | 38 | Wife | — | Italy |
Pedigree Summary
Margaret + 2 siblings
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)