MA
Mary Abbott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Illinois
Our Model Tree links this Mary Abbott across the 1930 and 1940 US Censuses in Montgomery-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Illinois |
| Surname | Abbott |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Farmersville Village |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Farmersville Village |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Sarah Abbott | Spouse | — | 59 | ~1881 |
| Thomas Abbott | Son | — | 33 | ~1907 |
| Joseph Abbott | Son | — | 25 | ~1915 |
| Lucille Abbott | Daughter | — | 35 | ~1905 |
| Mary Abbott | Daughter | — | 15 | ~1925 |
| Thomas Abbott | Head | — | 70 | ~1870 |
| Louis Abbott | Son | — | 19 | ~1921 |
Census Appearances
1930
Montgomery, Illinois
Daughter, age 5
Montgomery, Illinois · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Abbott |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Montgomery-County, Illinois
Daughter, age 15
Montgomery-County, Illinois · implied b. ~1925 — 7 household members
| Surname | Abbott |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Farmersville Village |
| 1935 Residence (County) | Montgomery |
| Industry | 0 |
| Highest Grade | H 2 |
| 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 Abbott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Abbott
Daughter · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Louis Abbott
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Abbott
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Abbott
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Abbott
Sibling · 1940 · age 25
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 — Montgomery-County, Illinois
Open full size
1940 US Federal Census — Montgomery-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00860-00045)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dale E. Mancell | 18 | Son | Laborer | Illinois |
| 42 | Fred W. Jr. Lueschen | 36 | Head | Painter | Illinois |
| 43 | Selma (V) Lueschen | 37 | Wife | — | Illinois |
| 44 | Karl F. Lueschen | 5 | Son | — | Illinois |
| 45 | Zeb D. Thompson | 47 | Head | Section Foreman | Kentucky |
| 46 | Angie L. (V) Thompson | 45 | Wife | — | Illinois |
| 47 | Lawrence H. Thompson | 17 | Son | — | Illinois |
| 48 | George M. M. Graham | 52 | Head | Building Contractor | Illinois |
| 49 | Flossie M. Graham | 48 | Wife | — | Illinois |
| 50 | James H. Graham | 25 | Son | Building Contractor | Illinois |
| 51 | John A. Brown | 37 | Head | Laborer | Illinois |
| 52 | Wilma M. Brown | 33 | Wife | — | Kentucky |
| 53 | Vera M. Brown | 10 | Daughter | — | Illinois |
| 54 | Raymond S. Miller | 49 | Head | Proprietor | Illinois |
| 55 | Hazel M. Miller | 47 | Wife | — | Illinois |
| 56 | John Whalen | 70 | Head | Retired | Illinois |
| 57 | Irene E. (V) Rowland | 30 | Daughter | — | Illinois |
| 58 | Neil J. Rowland | 1 | Grandson | — | Illinois |
| 59 | Thomas Abbott | 70 | Head | — | Illinois |
| 60 | Sarah A. (V) Abbott | 59 | Wife | — | Illinois |
| 61 | Lucille Abbott | 35 | Daughter | Journalist | Illinois |
| 62 | Thomas A. Jr. Abbott | 33 | Son | Laborer | Illinois |
| 63 | Joseph F. (Ab) Abbott | 25 | Son | — | Illinois |
| 64 | Louis A. Abbott | 19 | Son | Waiter | Illinois |
| 65 | Mary J. Abbott THIS PERSON | 15 | Daughter | — | Illinois |
| 66 | Albert (V) Peters | 59 | Head | Laborer | Illinois |
| 67 | Margaret E. Peters | 56 | Wife | — | Illinois |
| 68 | Martin F. (V) Mclean | 58 | Head | Electrician | Illinois |
| 69 | Bridget E. Mclean | 54 | Wife | — | Illinois |
| 70 | Joseph P. Mclean | 22 | Son | Painter | Illinois |
| 71 | Aloysius Mclean | 20 | Son | Clerk | Illinois |
| 72 | Russell E. (V) Brown | 38 | Head | Proprietor | Illinois |
| 73 | Ida V. Brown | 40 | Wife | — | Tennessee |
| 74 | William L. Rice | 14 | Stepson | — | Illinois |
| 75 | Joan R. Rice | 10 | Stepdaughter | — | Illinois |
| 76 | Danny R. Brown | 2 | Son | — | Illinois |
| 77 | Paul E. Clarke | 30 | Head | Barkeeper | Illinois |
| 78 | Frances E. (V) Clarke | 24 | Wife | — | Illinois |
| 79 | Lawrence E. V. Clarke | 1 | Son | — | 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)