MD
Mary Durham — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lasalle-County, Illinois
Our Model Tree links this Mary Durham across the 1930 and 1940 US Censuses in Lasalle-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 10-person household.
Age 10
b. ~1930
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lasalle-County, Illinois |
| Surname | Durham |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mendota City |
| 1935 Residence (County) | La Salle |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Mendota City |
| Est. Birth Year | ~1930 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Fyle Durham | Head | — | 42 | ~1898 |
| William Durham | Son | — | 4 | ~1936 |
| Harriet Durham | Spouse | — | 41 | ~1899 |
| Jack Durham | Son | — | 17 | ~1923 |
| Charles Durham | Son | — | 11 | ~1929 |
| James Durham | Son | — | 15 | ~1925 |
| Mary Durham | Daughter | — | 10 | ~1930 |
| Rita Durham | Daughter | — | 8 | ~1932 |
| Phyllis Durham | Daughter | — | 19 | ~1921 |
| Richard Durham | Son | — | 13 | ~1927 |
Census Appearances
1930
Lasalle, Illinois
Daughter, age
Lasalle, Illinois · implied b. ~1930 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Durham |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lasalle-County, Illinois
Daughter, age 10
Lasalle-County, Illinois · implied b. ~1930 — 10 household members
| Surname | Durham |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Mendota City |
| 1935 Residence (County) | La Salle |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 Durham across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Durham
Daughter · 1940 · age 10 · b. ~1930 · Illinois
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Sibling
James Durham
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Durham
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Durham
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Durham
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Durham
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Durham
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Durham
Sibling · 1940 · age 4
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 — Lasalle-County, Illinois
Open full size
1940 US Federal Census — Lasalle-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00833-00767)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Kreen | 16 | Son | — | Illinois |
| 2 | Clair Schrock | 36 | Lodger | Northern Utilities Co. | Illinois |
| 3 | David Barnett | 26 | Head | Bank Clerk | Illinois |
| 4 | Louella Barnett | 26 | Wife | Housewife | Illinois |
| 5 | Gabriel Pohl | 58 | Head | Helps On The Farm Home | Illinois |
| 6 | Cynthia Pohl | 48 | Wife | Housewife | Missouri |
| 7 | Arthur Pohl | 18 | Son | — | Illinois |
| 8 | Clarice Pohl | 17 | Daughter | — | Illinois |
| 9 | William Turk | 58 | Head | Sells Shoes At Home | Illinois |
| 10 | Clara Turk | 51 | Wife | Housewife | Illinois |
| 11 | Fyle W. Durham | 42 | Head | Locomotive Fireman | Illinois |
| 12 | Harriet Durham | 41 | Wife | Housewife | Illinois |
| 13 | Phyllis Durham | 19 | Daughter | Works Out At Housework | Illinois |
| 14 | Jack Durham | 17 | Son | — | Illinois |
| 15 | James Durham | 15 | Son | — | Illinois |
| 16 | Richard Durham | 13 | Son | — | Illinois |
| 17 | Charles Durham | 11 | Son | — | Illinois |
| 18 | Mary Ellen Durham THIS PERSON | 10 | Daughter | — | Illinois |
| 19 | Rita Durham | 8 | Daughter | — | Illinois |
| 20 | William Durham | 4 | Son | — | Illinois |
| 21 | Oscar Turk | 35 | Head | Asst. Plumber | Illinois |
| 22 | Mabella Turk | 32 | Wife | Housewife | Illinois |
| 23 | Jack Klinefelter | 44 | Head | Salesman, Selling Cars | Illinois |
| 24 | Clara Klinefelter | 47 | Wife | Housewife | Kansas |
| 25 | Bruce Klinefelter | 14 | Son | — | Illinois |
| 26 | William Widmer | 41 | Head | Runs A Garage | Illinois |
| 27 | Altheda Widmer | 37 | Wife | Housewife | Illinois |
| 28 | Doris Widmer | 18 | Daughter | — | Illinois |
| 29 | Ruth Widmer | 15 | Daughter | — | Illinois |
| 30 | Richard Widmer | 13 | Son | — | Illinois |
| 31 | Robert Widmer | 12 | Son | — | Illinois |
| 32 | William Jr. Widmer | 10 | Son | — | Illinois |
| 33 | Jean Widmer | 9 | Daughter | — | Illinois |
| 34 | Anne Widmer | 7 | Daughter | — | Illinois |
| 35 | Forrest F. Fahler | 48 | Head | Run An Oil Company | Illinois |
| 36 | Edith Fahler | 41 | Wife | Housewife | Illinois |
| 37 | Charles Fahler | 17 | Son | — | Illinois |
| 38 | Marjorie Fahler | 14 | Daughter | — | Illinois |
| 39 | Margaret Q. John | 68 | Head | Housekeeper | Illinois |
| 40 | Harold John | 46 | Son | Painter & Decorator | 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)