MS
Mary Scanlon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Scanlon across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 9-person household.
Age 45
b. ~1895
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Scanlon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1895 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rita Scanlon | Daughter | — | 16 | ~1924 |
| Irene Scanlon | Daughter | — | 13 | ~1927 |
| Helen Scanlon | Daughter | — | 12 | ~1928 |
| Anna Scanlon | Daughter | — | 11 | ~1929 |
| Mary Scanlon | Spouse | — | 45 | ~1895 |
| Betty Scanlon | Daughter | — | 12 | ~1928 |
| Margaret Scanlon | Daughter | — | 21 | ~1919 |
| Marie Scanlon | Daughter | — | 19 | ~1921 |
| Michael Scanlon | Head | — | 51 | ~1889 |
Census Appearances
1920
Cook, Illinois
Spouse, age 24
Cook, Illinois · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Scanlon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1912 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Spouse, age 35
Cook, Illinois · implied b. ~1895 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Scanlon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Spouse, age 45
Cook-County, Illinois · implied b. ~1895 — 9 household members
| Surname | Scanlon |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| 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 Mary Scanlon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Scanlon
Spouse · 1940 · age 45 · b. ~1895 · 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-t0627-00950-00729)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bella Lawlor | 28 | Wife | — | Ireland |
| 42 | Mary M. Lawlor | 4 | Daughter | — | Illinois |
| 43 | Rita S. Lawlor | 3 | Daughter | — | Illinois |
| 44 | Cecelia Lawlor | 1 | Daughter | — | Illinois |
| 45 | John Slattery | 36 | Head | Laborer | England |
| 46 | Mary Slattery | 33 | Wife | — | Ireland |
| 47 | James Slattery | 4 | Son | — | New York |
| 48 | Edward Tyle | 59 | Head | Laborer | Ohio |
| 49 | Sophie Tyle | 53 | Wife | — | Maryland |
| 50 | Edward Reidy | 32 | Head | — | Illinois |
| 51 | Margaret Reidy | 31 | Wife | — | Illinois |
| 52 | Margaret T. Reidy | 13 | Daughter | — | Illinois |
| 53 | Edward J. Reidy | 10 | Son | — | Illinois |
| 54 | Laverne Reidy | 9 | Daughter | — | Illinois |
| 55 | Patrick J. Reidy | 6 | Son | — | Illinois |
| 56 | Edward Haggerty | 52 | Head | Laborer | Illinois |
| 57 | Alice Haggerty | 47 | Wife | — | Illinois |
| 58 | George Haggerty | 17 | Son | Laborer | Illinois |
| 59 | Francis Haggerty | 15 | Son | — | Illinois |
| 60 | Cassie Crotty | 21 | Daughter | — | Illinois |
| 61 | Sally Crotty | 4 | Granddaughter | — | Illinois |
| 62 | James Crotty | 3 | Grandson | — | Illinois |
| 63 | George Wagner | 48 | Head | Laborer | Illinois |
| 64 | Nora Wagner | 50 | Wife | — | Illinois |
| 65 | George Wagner | 11 | Son | — | Illinois |
| 66 | Francis Hannan | 33 | Head | Laborer | Illinois |
| 67 | Norine Hannan | 28 | Wife | — | Illinois |
| 68 | George Hannan | 7 | Son | — | Illinois |
| 69 | Francis Jr. Hannan | 6 | Son | — | Illinois |
| 70 | Lawrence Hannan | 4 | Son | — | Illinois |
| 71 | Darlene Hannan | 1 | Daughter | — | Illinois |
| 72 | Michael Scanlon | 51 | Head | — | Ireland |
| 73 | Mary Scanlon THIS PERSON | 45 | Wife | — | Ireland |
| 74 | Margaret Scanlon | 21 | Daughter | Packer | Illinois |
| 75 | Marie Scanlon | 19 | Daughter | — | Illinois |
| 76 | Rita Scanlon | 16 | Daughter | — | Illinois |
| 77 | Irene Scanlon | 13 | Daughter | — | Illinois |
| 78 | Betty Scanlon | 12 | Daughter | — | Illinois |
| 79 | Helen Scanlon | 12 | Daughter | — | Illinois |
| 80 | Anna Scanlon | 11 | Daughter | — | 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)