MW
Margaret West — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret West across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 5-person household.
Age 69
b. ~1871
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | West |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1871 |
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 |
|---|---|---|---|---|
| Thomas West | Son | — | 31 | ~1909 |
| Irene West | Daughter | — | 28 | ~1912 |
| Margaret West | Head | — | 69 | ~1871 |
| John West | Son | — | 33 | ~1907 |
| Genevieve West | Daughter | — | 35 | ~1905 |
Census Appearances
1900
Cook, Illinois
Spouse, age 31
Cook, Illinois · implied b. ~1869 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | West |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | July |
| Birth Year | 1869 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Spouse, age 41
Cook, Illinois · implied b. ~1869 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | West |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 8 |
| Children Born | 6 |
| Children Living | 6 |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Cook, Illinois
Head, age 50
Cook, Illinois · implied b. ~1870 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | West |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1884 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 63
Cook, Illinois · implied b. ~1867
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | West |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | No |
| Home Value / Rent | R |
| Radio Set | 18 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 69
Cook-County, Illinois · implied b. ~1871 — 5 household members
| Surname | West |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 West across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret West
Head · 1940 · age 69 · b. ~1871 · Illinois
★ You are viewing this record
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-t0627-00949-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Crowley | 67 | Brother | Clerk | Illinois |
| 42 | Gerald Butler | 67 | Head | — | Ireland |
| 43 | Margaret Butler | 70 | Wife | — | Ireland |
| 44 | Catherine Butler | 31 | Daughter | Telephone Operatr | Illinois |
| 45 | Margaret Butler | 28 | Daughter | Clerk | Illinois |
| 46 | Anna Kermick | 68 | Head | — | Pennsylvania |
| 47 | Margaret West THIS PERSON | 69 | Head | — | Ireland |
| 48 | Genevieve West | 35 | Daughter | Clerk | Illinois |
| 49 | John West | 33 | Son | — | Illinois |
| 50 | Thomas West | 31 | Son | Clerk | Illinois |
| 51 | Irene West | 28 | Daughter | Clerk | Illinois |
| 52 | Joseph Woelfle | 47 | Head | Fireman | Ohio |
| 53 | Margaret Woelfle | 47 | Wife | — | Illinois |
| 54 | Mary Woelfle | 17 | Daughter | — | Ohio |
| 55 | Florence Woelfle | 14 | Daughter | — | Illinois |
| 56 | Joseph Woelfle | 10 | Son | — | Illinois |
| 57 | Joseph Shaughnessy | 50 | Head | Laborer | Illinois |
| 58 | Lillian Shaughnessy | 40 | Wife | Feeder | Illinois |
| 59 | Rita Shaughnessy | 20 | Daughter | Waitress | Illinois |
| 60 | Dorothy Shaughnessy | 17 | Daughter | Clerk | Illinois |
| 61 | Laverne Shaughnessy | 13 | Daughter | — | Illinois |
| 62 | Joseph Shaughnessy | 10 | Son | — | Illinois |
| 63 | Edward Shaughnessy | 9 | Son | — | Illinois |
| 64 | James Shaughnessy | 7 | Son | — | Illinois |
| 65 | Anna Shaughnessy | 11 | Daughter | — | Illinois |
| 66 | Harry Cook | 55 | Head | Janitor | Illinois |
| 67 | Esther Cook | 46 | Wife | Waitress | Illinois |
| 68 | William Schofield | 41 | Head | Oiler | Illinois |
| 69 | Eva Schofield | 38 | Wife | — | Illinois |
| 70 | William Schofield | 18 | Son | Elevator Operator | Illinois |
| 71 | James Schofield | 15 | Son | — | Illinois |
| 72 | Richard Schofield | 13 | Son | — | Illinois |
| 73 | Mary Schofield | 11 | Daughter | — | Illinois |
| 74 | Patricia Schofield | 9 | Daughter | — | Illinois |
| 75 | Robert Shaughnessy | 46 | Head | Laborer | Illinois |
| 76 | Jane Shaughnessy | 43 | Wife | Laborer | Illinois |
| 77 | Matthew Shaughnessy | 24 | Son | Laborer | Illinois |
| 78 | George Shaughnessy | 18 | Son | New Worker | Illinois |
| 79 | Leonard Shaughnessy | 15 | Son | — | Illinois |
| 80 | Edward Shaughnessy | 13 | Son | — | 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)