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Mary Butler — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Mary Butler across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 3-person household.
Age 62
b. ~1878
Female
Spouse
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | H |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Arthur Butler | Head | — | 61 | ~1879 |
| Dwight Butler | Son | — | 35 | ~1905 |
| Mary Butler | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Scott, Iowa
Spouse, age 42
Scott, Iowa · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | Marianne |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | denmark |
Spouse, age 52
Scott, Iowa · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 23 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Scott-County, Iowa
Spouse, age 62
Scott-County, Iowa · implied b. ~1878 — 3 household members
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Naturalization Status | Naturalized |
| Class of Worker | H |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Butler 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 Butler
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
37 people indexed on this census page (nara:1940:m-t0627-01202-01030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Jr. Corry | 22 | Brother | Delivery Man | Iowa |
| 42 | Fred Daube | 83 | Head | — | New York |
| 43 | Laura Daube | 76 | Wife | — | Iowa |
| 44 | Ed. Wernentin | 66 | Head | Plumbing | Iowa |
| 45 | Minnie Wernentin | 64 | Wife | — | Germany |
| 46 | Lawrence Geiger | 43 | Head | Machinist | Iowa |
| 47 | Vera Geiger | 45 | Wife | Housework | Illinois |
| 48 | Kenneth Geiger | 13 | Son | — | Illinois |
| 49 | Lawrence Jr. Geiger | 22 | Head | Machinist | Iowa |
| 50 | Adeline Geiger | 23 | Wife | — | Iowa |
| 51 | Joan D. Geiger | 0 | Daughter | — | Iowa |
| 53 | Arthur Peterson | 53 | Head | — | Illinois |
| 54 | Teresa Peterson | 40 | Wife | Retail Concession | Iowa |
| 55 | Harriette Plagmann | 43 | Head | — | Iowa |
| 56 | Bertha L. Feeney | 70 | Head | — | Iowa |
| 57 | Le Verne Maynard | 32 | Lodger | Musician | Illinois |
| 58 | Ruth Ferguson | 30 | Lodger | Operator | Iowa |
| 60 | Henry Lantau | 72 | Head | Laborer | Germany |
| 61 | Hedwig Lantau | 63 | Wife | — | Germany |
| 62 | James Feeney | 61 | Head | Barber | Iowa |
| 63 | Mary G. Feeney | 26 | Daughter | Packer | Iowa |
| 64 | Agnes Feeney | 24 | Daughter | Waitress | Iowa |
| 65 | George Koburich | 32 | Head | Mechanic | Illinois |
| 66 | Florence Koburich | 25 | Wife | Office Work | Illinois |
| 67 | Peter Frank Koburich | 2 | Son | — | Illinois |
| 68 | Francis Collins | 51 | Head | Draw Bridge Operator | Iowa |
| 69 | Gertrude Collins | 50 | Wife | — | Iowa |
| 70 | Robert Collins | 17 | Son | — | Iowa |
| 71 | Phyllis Collins | 8 | Daughter | — | Iowa |
| 72 | Mary Dittman | 83 | Head | — | Missouri |
| 73 | Esta Dittman | 50 | Daughter | Cook | Iowa |
| 74 | William H. Stolley | 74 | Head | — | Germany |
| 75 | Anna Jones | 52 | Head | Laborer | Iowa |
| 76 | Grace Jones | 47 | Wife | — | Iowa |
| 77 | Arthur H. Butler | 61 | Head | Bookkeeper | Iowa |
| 78 | Mary Butler THIS PERSON | 62 | Wife | — | Denmark |
| 79 | Dwight Butler | 35 | Son | Order Clerk | Iowa |
Related Census Records
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)