MK
Mary Kramer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Mary Kramer across the 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 7-person household.
Age 54
b. ~1886
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | New Wine |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | New Wine |
| Est. Birth Year | ~1886 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Kramer | Daughter | — | 17 | ~1923 |
| Laverne Kramer | Son | — | 19 | ~1921 |
| Joe Kramer | Son | — | 7 | ~1933 |
| Ilene Kramer | Daughter | — | 12 | ~1928 |
| Mary Kramer | Spouse | — | 54 | ~1886 |
| Joseph Kramer | Head | — | 58 | ~1882 |
| Herbert Kramer | Son | — | 15 | ~1925 |
Census Appearances
1930
Dubuque, Iowa
Spouse, age 47
Dubuque, Iowa · implied b. ~1883 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kramer |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Spouse, age 54
Dubuque-County, Iowa · implied b. ~1886 — 7 household members
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | New Wine |
| 1935 Residence (County) | Dubuque |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Kramer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kramer
Spouse · 1940 · age 54 · b. ~1886 · 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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01159-00571)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Klostermann | 57 | Head | Farming | Iowa |
| 42 | Catherine Klostermann | 58 | Wife | — | Iowa |
| 43 | Fred Klostermann | 25 | Son | Laborer | Iowa |
| 44 | Joseph Klostermann | 20 | Son | Laborer | Iowa |
| 45 | Irene Klostermann | 18 | Daughter | Maid | Iowa |
| 46 | John Klostermann | 16 | Son | Laborer | Iowa |
| 47 | Gerald Klostermann | 14 | Son | — | Iowa |
| 48 | Alphonse Reis | 31 | Head | Farming | Iowa |
| 49 | Gertrude Reis | 31 | Wife | — | Iowa |
| 50 | Wilfred Reis | 8 | Son | — | Iowa |
| 51 | Charles Reis | 6 | Son | — | Iowa |
| 52 | Walter Reis | 4 | Son | — | Iowa |
| 53 | John Reis | 3 | Son | — | Iowa |
| 54 | Mary Reis | 1 | Daughter | — | Iowa |
| 55 | Fred Steffen | 58 | Head | Farming | Iowa |
| 56 | Elizabeth Steffen | 54 | Wife | — | Iowa |
| 57 | Nick Jr. Steffen | 23 | Son | Laborer | Iowa |
| 58 | Alphonse Steffen | 21 | Son | Laborer | Iowa |
| 59 | Ambrose Steffen | 18 | Son | Laborer | Iowa |
| 60 | Loretta Steffen | 16 | Daughter | Maid | Iowa |
| 61 | Ardella Steffen | 12 | Daughter | — | Iowa |
| 62 | Calista Steffen | 10 | Daughter | — | Iowa |
| 63 | Joseph Kramer | 58 | Head | Farming | Iowa |
| 64 | Mary Kramer THIS PERSON | 54 | Wife | — | Iowa |
| 65 | Laverne Kramer | 19 | Son | Laborer | Iowa |
| 66 | Margaret June Kramer | 17 | Daughter | Laborer | Iowa |
| 67 | Herbert Kramer | 15 | Son | Laborer | Iowa |
| 68 | Ilene Kramer | 12 | Daughter | — | Iowa |
| 69 | Joe Jr. Kramer | 7 | Son | — | Iowa |
| 70 | Alphonse Kramer | 26 | Head | Farming | Iowa |
| 71 | Irene Kramer | 23 | Wife | — | Iowa |
| 72 | Albert Wilderhaus | 28 | Head | Farming | Iowa |
| 73 | Mary Wilderhaus | 23 | Wife | — | Iowa |
| 74 | Robert Wilderhaus | 2 | Son | — | Iowa |
| 75 | Mary Frances Wilderhaus | 1 | Daughter | — | Iowa |
| 76 | Ruth Ann Wilderhaus | 0 | Daughter | — | Iowa |
| 77 | Alfred Klostermann | 47 | Head | Farming | Iowa |
| 78 | Rose Klostermann | 43 | Wife | — | Iowa |
| 79 | Arthur Klostermann | 19 | Son | Laborer | Iowa |
| 80 | Rita Mae Klostermann | 12 | Daughter | Servant | 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)