ME
Mary Eckert — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Mary Eckert across the 1910, 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Adolph & Walter — first a daughter (b.~1910), then head of a 9-person household.
Age 30
b. ~1910
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Eckert |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | BELLEVILLE |
| 1935 Residence (County) | ST. CLAIR |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 900 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Teacher |
| Township / Ward | Belleville |
| Est. Birth Year | ~1910 |
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 |
|---|---|---|---|---|
| Marjorie Eckert | Daughter | — | 20 | ~1920 |
| Mary Eckert | Daughter | — | 30 | ~1910 |
| Frederick Eckert | Son | — | 14 | ~1926 |
| Ottilie Eckert | Spouse | — | 59 | ~1881 |
| Lola Eckert | Daughter | — | 19 | ~1921 |
| Alice Eckert | Daughter | — | 28 | ~1912 |
| Walter Eckert | Head | — | 61 | ~1879 |
| Lucille Eckert | Daughter | — | 26 | ~1914 |
| Emilie Weber | Other | — | 60 | ~1880 |
Census Appearances
1910
St Clair, …
Daughter, age 1
St Clair, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Eckert |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
St Clair, …
Daughter, age 10
St Clair, Illinois · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Eckert |
| Given Name | Mary |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Daughter, age 20
St Clair, Illinois · implied b. ~1910 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Echert |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Teacher |
| Industry | School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Daughter, age 30
St.-Clair-County, Illinois · implied b. ~1910 — 9 household members
| Surname | Eckert |
| Given Name | Mary I |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | BELLEVILLE |
| 1935 Residence (County) | ST. CLAIR |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 900 |
| Highest Grade | C 2 |
| 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 Eckert across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Adolph Eckert (~0.92 confidence) and father Walter Eckert (~0.92 confidence) and father Walter Eckert (~0.92 confidence) and mother Johanna Eckert (~0.92 confidence) and mother Ottilie Eckert (~0.92 confidence) and mother Ottilie Eckert (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Adolph Eckert
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Walter Eckert
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Walter Eckert
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Johanna Eckert
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Ottilie Eckert
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ottilie Eckert
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Eckert
Daughter · 1940 · age 30 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Alice Eckert
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Eckert
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Eckert
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Eckert
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lola Eckert
Sibling · 1940 · age 19
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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
31 people indexed on this census page (nara:1940:m-t0627-00878-00142)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur W Ruhl | 43 | Head | Laborer | Illinois |
| 42 | Emma Ruhl | 34 | Wife | — | Illinois |
| 43 | Walter R Wolf | 33 | Head | Laborer | Illinois |
| 44 | Juanita R Wolf | 23 | Wife | — | Illinois |
| 45 | Eugene Duckworth | 32 | Head | Teacher | Illinois |
| 46 | Bernice Duckworth | 32 | Wife | — | Illinois |
| 47 | Thelma J Duckworth | 1 | Daughter | — | Illinois |
| 48 | Louis Parrish | 51 | Head | Stove Mounter | Illinois |
| 49 | Dorothy Parrish | 51 | Wife | — | Illinois |
| 50 | Herman Nomeder | 42 | Head | Molder | Illinois |
| 51 | Ruby Nomeder | 34 | Wife | — | Illinois |
| 52 | Eugene Nomeder | 20 | Son | Checker | Illinois |
| 53 | Lorena Nomeder | 9 | Daughter | — | Illinois |
| 56 | Frank Hollman | 36 | Head | Draftsman | Illinois |
| 57 | Florence Hollman | 36 | Wife | — | Illinois |
| 58 | Patricia Hollman | 10 | Daughter | — | Illinois |
| 59 | Beverly Hollman | 8 | Daughter | — | Illinois |
| 60 | Joseph Adam | 56 | Head | Stove Mounter | Illinois |
| 61 | Louisa Adam | 52 | Wife | — | Illinois |
| 62 | Marie Adam | 28 | Daughter | Book Keeper | Illinois |
| 63 | Edward A Brune | 61 | Head | Molder | Illinois |
| 64 | Johannah Brune | 51 | Wife | — | Illinois |
| 69 | Walter Eckert | 61 | Head | Salesman | Illinois |
| 70 | Ottilie Eckert | 59 | Wife | — | Illinois |
| 71 | Mary I Eckert THIS PERSON | 30 | Daughter | Teacher | Illinois |
| 72 | Alice R Eckert | 28 | Daughter | Hostess | Illinois |
| 73 | Lucille R Eckert | 26 | Daughter | Teacher | Illinois |
| 74 | Marjorie B Eckert | 20 | Daughter | Stenographer | Illinois |
| 75 | Lola L Eckert | 19 | Daughter | — | Illinois |
| 76 | Frederick H Eckert | 14 | Son | — | Illinois |
| 77 | Emilie M Weber | 60 | Sister-in-law | Corsatierr | Illinois |
Pedigree Summary
Mary + 5 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)