MD
Mary Dillon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Livingston-County, Illinois
Our Model Tree links this Mary Dillon across the 1930 and 1940 US Censuses in Livingston-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 11-person household.
Age 20
b. ~1920
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Livingston-County, Illinois |
| Surname | Dillon |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Flanagan Village |
| 1935 Residence (County) | Livingston |
| Additional Details | |
| Occupation | Secretary |
| Industry | Real Estate Agency |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1170 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Secretary |
| Township / Ward | Flanagan Village |
| Est. Birth Year | ~1920 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Dillon | Daughter | — | 20 | ~1920 |
| Betty Ice | Daughter | — | 14 | ~1926 |
| Mildred Forney | Daughter | — | 23 | ~1917 |
| Loren Crumm | Daughter | — | 12 | ~1928 |
| Ellen Flanagan | Daughter | — | 26 | ~1914 |
| Jess Flanagan | Head | — | 22 | ~1918 |
| Rich Mannott | Other | — | 52 | ~1888 |
| Burtas Mannott | Other | — | 52 | ~1888 |
| John Cullan | Son | — | 12 | ~1928 |
| Daulton Ice | Son | — | 15 | ~1925 |
| Paul Dillon | Son | — | 23 | ~1917 |
Census Appearances
1930
Livingston, Illinois
Daughter, age 10
Livingston, Illinois · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dillon |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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
Livingston-County, Illinois
Daughter, age 20
Livingston-County, Illinois · implied b. ~1920 — 11 household members
| Surname | Dillon |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Flanagan Village |
| 1935 Residence (County) | Livingston |
| Occupation | Secretary |
| Industry | Real Estate Agency |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 1170 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Mary Dillon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Dillon
Daughter · 1940 · age 20 · b. ~1920 · Illinois
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Sibling
Daulton Ice
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Dillon
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Forney
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Flanagan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loren Crumm
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cullan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Ice
Sibling · 1940 · age 14
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 — Livingston-County, Illinois
Open full size
1940 US Federal Census — Livingston-County, Illinois
Page Contents
12 people indexed on this census page (nara:1940:m-t0627-00837-00494)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jess M Flanagan | 22 | Head | Journalist | Illinois |
| 42 | Paul J. Dillon | 23 | Son | Traveling Salesman | Illinois |
| 43 | Mary I Dillon THIS PERSON | 20 | Daughter | Secretary | Illinois |
| 44 | Loren L. Crumm | 12 | Daughter | — | Illinois |
| 45 | Ellen Flanagan | 26 | Daughter | Inspector | Illinois |
| 46 | John R. Cullan | 12 | Son | — | Illinois |
| 47 | Mildred Forney | 23 | Daughter | Librarian | Illinois |
| 48 | Daulton B Ice | 15 | Son | — | Illinois |
| 49 | Betty Ice | 14 | Daughter | — | Illinois |
| 50 | Rich Mannott | 52 | Brother | — | Germany |
| 51 | Burtas Mannott | 52 | Brother | — | Illinois |
| 52 | Emma Prahl | 48 | Head | — | Wisconsin |
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)