MS
Mary Schroeder — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Mary Schroeder across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1885), then head of a 3-person household.
Age 55
b. ~1885
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Schroeder |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | Nurse Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 75 |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Nurse Maid |
| Township / Ward | Davenport City |
| Est. Birth Year | ~1885 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Schroeder | Head | — | 54 | ~1886 |
| Clarence Schroeder | Son | — | 26 | ~1914 |
| Mary Schroeder | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Scott, Iowa
Spouse, age 34
Scott, Iowa · implied b. ~1886 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Scott, Iowa
Spouse, age 45
Scott, Iowa · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schroeder |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 25 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Scott-County, Iowa
Spouse, age 55
Scott-County, Iowa · implied b. ~1885 — 3 household members
| Surname | Schroeder |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Occupation | Nurse Maid |
| Industry | Private Home |
| Class of Worker | PW |
| Hours Worked | 8 |
| Income (1939) | 75 |
| Highest Grade | 6 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Schroeder 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 Schroeder
Spouse · 1940 · age 55 · b. ~1885 · Iowa
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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 — Scott-County, Iowa
Open full size
1940 US Federal Census — Scott-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01203-00010)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patty A. Litus | 11 | daughter | — | Iowa |
| 2 | John R. Litus | 7 | daughter | — | Iowa |
| 3 | John R. Northington | 44 | Head | Vice President | Tennessee |
| 4 | Vera J. Northington | 31 | Wife | — | Missouri |
| 5 | Patricia R. Northington | 12 | daughter | — | Iowa |
| 6 | John R. Northington | 2 | son | — | Missouri |
| 7 | William H. Herzberg | 48 | Head | Tool Maker | Iowa |
| 8 | Nelva C. Herzberg | 36 | Wife | — | Iowa |
| 9 | Betty Lou Herzberg | 11 | daughter | — | Iowa |
| 10 | William H. Jr. Herzberg | 10 | son | — | Iowa |
| 11 | M. Aden Mosher | 50 | Head | Teacher | Indiana |
| 12 | Kate C. Mosher | 50 | Wife | — | Illinois |
| 13 | Van E. Mosher | 22 | son | Designer | Louisiana |
| 14 | Don R. Mosher | 18 | son | — | Iowa |
| 15 | Vincent J. Coleman | 48 | Head | — | Iowa |
| 16 | Anna D. Coleman | 45 | Wife | — | Iowa |
| 17 | Ray H. Mcdowell | 54 | Head | Office Mngr. | Kansas |
| 18 | Jessie A. Mcdowell | 49 | Wife | — | Kansas |
| 19 | William Schroeder | 54 | Head | Heat Treater | Iowa |
| 20 | Mary S. Schroeder THIS PERSON | 55 | Wife | Nurse Maid | Indiana |
| 21 | Clarence Schroeder | 26 | son | Clerk | Iowa |
| 22 | Fred D. Kroger | 43 | Head | Machinist | Iowa |
| 23 | Helen J. Kroger | 43 | Wife | — | Iowa |
| 24 | Charles H. Kroger | 15 | son | Paper Carrier | Iowa |
| 25 | Stephen L. Brundage | 39 | Head | Salesman | Illinois |
| 26 | Marge A. Brundage | 37 | Wife | — | Illinois |
| 27 | Robert L. Sanford | 15 | step-son | — | Illinois |
| 28 | Here Ends Block 92 Begins Block 93 | None | — | — | — |
| 29 | William Kniper | 47 | Head | Salesman | Illinois |
| 30 | Martha B. Kniper | 47 | Wife | — | Illinois |
| 31 | Alfred Neugebauer | 57 | Head | Proprietor | Germany |
| 32 | Bertha Neugebauer | 57 | Wife | — | Germany |
| 33 | Alfred Jr. Neugebauer | 24 | son | Clerk | Iowa |
| 34 | Robert B. Leland | 31 | Head | Engineer | Ohio |
| 35 | Hope R. Leland | 28 | Wife | — | Washington |
| 36 | June Bonnett | 19 | Maid | Telephone Operator | Iowa |
| 37 | Carl A. Duffing | 31 | Head | Salesman | Nebraska |
| 38 | Edyth M. Duffing | 33 | Wife | — | Nebraska |
| 39 | Barbara J. Duffing | 8 | daughter | — | Nebraska |
| 40 | Muia R. Duffing | 6 | daughter | — | Nebraska |
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)