MK
Mary Kramer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kane-County, Illinois
Our Model Tree links this Mary Kramer across the 1930 and 1940 US Censuses in Kane-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 9-person household.
Age 48
b. ~1892
Female
Spouse
Born: Luxemburg
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kane-County, Illinois |
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Luxemburg |
| 1935 Residence (City) | Aurora |
| 1935 Residence (County) | Kane |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | luxemburg |
| Township / Ward | Aurora |
| Est. Birth Year | ~1892 |
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 |
|---|---|---|---|---|
| George Reynolds | Other | — | 21 | ~1919 |
| Betty Kramer | Daughter | — | 14 | ~1926 |
| Nicholas Kramer | Son | — | 18 | ~1922 |
| Bernard Kramer | Son | — | 17 | ~1923 |
| Marcella Reynolds | Daughter | — | 22 | ~1918 |
| Ernest Hanson | Other | — | 32 | ~1908 |
| Peter Kramer | Head | — | 60 | ~1880 |
| Mary Kramer | Spouse | — | 48 | ~1892 |
| Margaret Hanson | Daughter | — | 24 | ~1916 |
Census Appearances
1930
Kane, Illinois
Other, age 39
Kane, Illinois · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Luxemburg |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 25 |
| Father's Birthplace | Luxemburg |
| Mother's Birthplace | Luxemburg |
| Can Read/Write | Yes |
| Mother Tongue | Luxemburg |
| Veteran | No |
| Birthplace (normalized) | luxemburg |
1940
Kane-County, Illinois
Spouse, age 48
Kane-County, Illinois · implied b. ~1892 — 9 household members
| Surname | Kramer |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Luxemburg |
| 1935 Residence (City) | Aurora |
| 1935 Residence (County) | Kane |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | luxemburg |
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 48 · b. ~1892 · Illinois
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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 — Kane-County, Illinois
Open full size
1940 US Federal Census — Kane-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00820-00329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Thill | 20 | daughter | Typewriter Ribbon Machinist | Illinois |
| 42 | William Thill | 17 | son | — | Illinois |
| 43 | Bruce R. Smith | 52 | Head | Switchman | Illinois |
| 44 | Susan Smith | 41 | Wife | — | Illinois |
| 45 | Matthew Lorenz | 14 | step son | — | Illinois |
| 46 | John Lorenz | 13 | step son | — | Illinois |
| 47 | Raymond Lorenz | 11 | step son | — | Illinois |
| 48 | Rosemary Lorenz | 5 | step daughter | — | Illinois |
| 49 | Albert Kucharski | 62 | Head | Cement Work Laborer | Austria |
| 50 | Catherine Kucharski | 58 | Wife | — | Austria |
| 51 | John Kucharski | 31 | son | Laborer In Lumber Yard | New York |
| 52 | Adam Kucharski | 22 | son | Laborer In Car Shops | New York |
| 53 | Helen Kucharski | 20 | daughter | Typist | Illinois |
| 54 | Margaret Kucharski | 16 | daughter | — | Illinois |
| 55 | Frank Kucharski | 14 | son | — | Illinois |
| 56 | Harry J. Montgomery | 47 | Head | Policeman | Illinois |
| 57 | Myrtle Montgomery | 39 | Wife | Stenographer | Illinois |
| 58 | John R. Weigerber | 33 | Head | Service Sta. Opr. | Illinois |
| 59 | Ethel Weigerber | 25 | Wife | — | Wisconsin |
| 60 | Margaret Weigerber | 53 | mother | — | Illinois |
| 61 | Peter Kramer | 60 | Head | Assembler | Luxemburg |
| 62 | Mary Kramer THIS PERSON | 48 | Wife | — | Luxemburg |
| 63 | Nicholas Kramer | 18 | son | Salesman | Illinois |
| 64 | Bernard Kramer | 17 | son | — | Illinois |
| 65 | Betty Kramer | 14 | daughter | — | Illinois |
| 66 | Ernest Hanson | 32 | son in law | Bar-Tender | Illinois |
| 67 | Margaret Hanson | 24 | daughter | Power Machine Opr. | Illinois |
| 68 | George Reynolds | 21 | son in law | Printer | Illinois |
| 69 | Marcella Reynolds | 22 | daughter | — | Illinois |
| 70 | Harry Petsch | 47 | Head | Clerk | Illinois |
| 71 | Josephine Petsch | 48 | Wife | — | Illinois |
| 72 | Bernice Petsch | 22 | daughter | Book-Keeper | Illinois |
| 73 | Loraine Petsch | 20 | daughter | Power Machine Opr. | Illinois |
| 74 | Vernon Petsch | 11 | son | — | Illinois |
| 75 | Charlene Petsch | 7 | daughter | — | Illinois |
| 76 | Nick Hatgen | 44 | Head | Machinist Helper | Illinois |
| 77 | Margaret Hatgen | 40 | Wife | — | Illinois |
| 78 | Richard Hatgen | 19 | son | Clerk | Illinois |
| 79 | Edwin Hatgen | 18 | son | Clerk | Illinois |
| 80 | Gerald Hatgen | 12 | son | — | Illinois |
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)