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Margaret Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Mason across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 3-person household.
Age 54
b. ~1886
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Chicago |
| Est. Birth Year | ~1886 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mason | Spouse | — | 54 | ~1886 |
| Edward Mason | Son | — | 19 | ~1921 |
| Edward Mason | Head | — | 60 | ~1880 |
Census Appearances
1920
Cook, Illinois
Spouse, age 34
Cook, Illinois · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1899 |
| Birthplace (normalized) | england |
1930
Cook, Illinois
Other, age 44
Cook, Illinois · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 20 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Cook-County, Illinois
Spouse, age 54
Cook-County, Illinois · implied b. ~1886 — 3 household members
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mason
Spouse · 1940 · age 54 · b. ~1886 · 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
39 people indexed on this census page (nara:1940:m-t0627-00933-00415)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Andrew Nelson | 55 | Head | Watchman | Mississippi |
| 42 | Katie Nelson | 38 | Wife | — | Russia |
| 43 | Edward Mason | 60 | Head | — | Illinois |
| 44 | Margaret Mason THIS PERSON | 54 | Wife | — | England |
| 45 | Edward Mason | 19 | Son | Laborer | Illinois |
| 46 | Mabel Brotsch | 34 | Head | — | Illinois |
| 47 | Joyce Brotsch | 12 | Daughter | — | Illinois |
| 48 | Adeline Brotsch | 10 | Son | — | Illinois |
| 49 | Joseph Schreiner | 47 | Head | Laborer | Illinois |
| 50 | Hazel Schreiner | 45 | Wife | — | Illinois |
| 51 | Annaline Schreiner | 19 | Daughter | Clerical | Illinois |
| 52 | Clara Wolfenden | 48 | Head | Housework | Wisconsin |
| 53 | Bernice Wolfenden | 18 | Daughter | Waitress | Illinois |
| 54 | Joseph Venus | 32 | Head | Salesman | Illinois |
| 55 | Dorothy Venus | 28 | Wife | — | Indiana |
| 56 | Rosemary Venus | 6 | Daughter | — | Illinois |
| 57 | Joseph Venus | 5 | Son | — | Illinois |
| 58 | Normajean Venus | 2 | Daughter | — | Illinois |
| 59 | Frank Geyer | 25 | Head | Laborer | Michigan |
| 60 | Marianne Geyer | 25 | Wife | — | Illinois |
| 61 | Margaret Geyer | 3 | Daughter | — | Illinois |
| 62 | Frank Geyer | 2 | Son | — | Illinois |
| 63 | James Geyer | 1 | Son | — | Illinois |
| 64 | Patricia Geyer | 0 | Daughter | — | Illinois |
| 65 | Ernest Hedin | 39 | Head | Decorator | Sweden |
| 66 | Lillian Hedin | 32 | Wife | — | Sweden |
| 67 | George Upton | 70 | Head | — | England |
| 68 | Alice Upton | 60 | Wife | — | England |
| 69 | Raymond Upton | 16 | Son | — | Illinois |
| 70 | Sam Caho | 34 | Head | Decorator | Illinois |
| 71 | Della Caho | 31 | Wife | — | Illinois |
| 72 | Mary Faith | 37 | Head | — | Ohio |
| 73 | Shirley Faith | 16 | Son | — | Ohio |
| 74 | Ruth Arnold | 67 | Head | — | Illinois |
| 75 | Jessie Arnold | 64 | Sister | — | Illinois |
| 76 | James Fields | 70 | Head | Police Officer | Michigan |
| 77 | Josephine Fields | 75 | Wife | — | Sweden |
| 78 | James Mac Benja | 48 | Head | Accountant | Illinois |
| 79 | Louise Mac Benja | 53 | Wife | — | Kansas |
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)