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Mary Buck — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Mary Buck across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 4-person household.
Age 62
b. ~1878
Female
Spouse
Born: Germany
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Buck |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | Davenport City |
| Est. Birth Year | ~1878 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Fred Buck | Head | — | 65 | ~1875 |
| Ethel Buck | Daughter | — | 27 | ~1913 |
| Mary Buck | Spouse | — | 62 | ~1878 |
| Jack Barthel | Other | — | 15 | ~1925 |
Census Appearances
1920
Scott, Iowa
Spouse, age 41
Scott, Iowa · implied b. ~1879 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Beck |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1884 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Year of Naturalization | 1896 |
| Birthplace (normalized) | germany |
1930
Scott, Iowa
Other, age 51
Scott, Iowa · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Beck |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Germany |
| Naturalization Status | Naturalized |
| Year of Immigration | 1883 |
| Age at First Marriage | 19 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
Scott-County, Iowa
Spouse, age 62
Scott-County, Iowa · implied b. ~1878 — 4 household members
| Surname | Buck |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Naturalization Status | Naturalized |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Buck 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 Buck
Spouse · 1940 · age 62 · b. ~1878 · 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-t0627-01202-00766)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Lou De Dean | 4 | daughter | — | Iowa |
| 2 | Patty Lee De Dean | 1 | daughter | — | Iowa |
| 3 | Fred Buck | 65 | Head | — | Iowa |
| 4 | Mary A. Buck THIS PERSON | 62 | wife | — | Germany |
| 5 | Ethel Buck | 27 | daughter | Cashier | Iowa |
| 6 | Jack Barthel | 15 | son-in-law | Apprentice Machinist | Iowa |
| 7 | Harry Stoltenberg | 56 | Head | Shipping Clerk | Iowa |
| 8 | Roseann Stoltenberg | 35 | wife | — | Kentucky |
| 9 | William Stoltenberg | 11 | son | — | Iowa |
| 10 | Donna Elaine Stoltenberg | 5 | daughter | — | Iowa |
| 11 | Fred Barrick | 56 | lodger | — | New York |
| 12 | Henry Uerp | 53 | Head | Foreman | Iowa |
| 13 | Lillie Uerp | 51 | wife | — | Iowa |
| 14 | Robert Uerp | 25 | son | Sales Clerk | Iowa |
| 15 | Helen Uerp | 18 | daughter | — | Iowa |
| 16 | Josephine Uerp | 13 | daughter | — | Iowa |
| 17 | Bernard Uerp | 10 | son | — | Iowa |
| 18 | Gwendolyn Uerp | 9 | daughter | — | Iowa |
| 19 | Beverly Uerp | 6 | daughter | — | Iowa |
| 20 | Susan Uerp | 5 | daughter | — | Iowa |
| 21 | Frederick Kronfield | 30 | Head | Packer | Minnesota |
| 22 | Anna Kronfield | 29 | wife | — | Iowa |
| 23 | Shirley Ann Kronfield | 9 | daughter | — | Iowa |
| 24 | Robert Kronfield | 7 | son | — | Iowa |
| 25 | Richard Kronfield | 5 | son | — | Iowa |
| 26 | Ralph Kronfield | 1 | son | — | Iowa |
| 27 | James Duffy | 30 | Head | Manager | Iowa |
| 28 | Isabella Duffy | 26 | wife | — | Illinois |
| 29 | Patricia Duffy | 5 | daughter | — | Iowa |
| 30 | Eunice Duffy | 3 | daughter | — | Iowa |
| 31 | Earl Monholland | 57 | Head | Runs Jack Hammer | Iowa |
| 32 | Madge Monholland | 44 | wife | — | Iowa |
| 33 | Juanita Monholland | 15 | daughter | — | Iowa |
| 34 | Paul Jr. Monholland | 4 | son | — | Iowa |
| 35 | B. Joseph Lawrence | 85 | Head | — | Germany |
| 36 | Magela Lawrence | 83 | wife | — | Germany |
| 37 | Edward Truenau | 54 | Head | Clerk | Iowa |
| 38 | Matilda Truenau | 53 | wife | — | Iowa |
| 39 | Helen L. Truenau | 23 | daughter | Stenographer | Iowa |
| 40 | Edward J. Truenau | 21 | son | Bottle Tapper | Iowa |
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)