MK
Mary Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Blue-Earth-County, Minnesota
Our Model Tree links this Mary Kaufman across the 1930 and 1940 US Censuses in Blue-Earth-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Blue-Earth-County, Minnesota |
| Surname | Kaufman |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Mankato |
| 1935 Residence (County) | Blue Earth |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Mankato |
| Est. Birth Year | ~1927 |
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 |
|---|---|---|---|---|
| Donald Kaufman | Son | — | 18 | ~1922 |
| John Kaufman | Son | — | 9 | ~1931 |
| Ann Kaufman | Spouse | — | 45 | ~1895 |
| George Kaufman | Son | — | 4 | ~1936 |
| Mary Kaufman | Daughter | — | 13 | ~1927 |
| Jane Kaufman | Daughter | — | 16 | ~1924 |
| Helen Kaufman | Daughter | — | ~1940 | |
| Jeanne Kaufman | Daughter | — | 15 | ~1925 |
| George Kaufman | Head | — | 49 | ~1891 |
Census Appearances
1930
Blue Earth, …
Daughter, age 2
Blue Earth, Minnesota · implied b. ~1928 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caufman |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | New York |
| Mother's Birthplace | Minnesota |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Blue-Earth-County, Minnesota
Daughter, age 13
Blue-Earth-County, Minnesota · implied b. ~1927 — 9 household members
| Surname | Kaufman |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Mankato |
| 1935 Residence (County) | Blue Earth |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Kaufman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kaufman
Daughter · 1940 · age 13 · b. ~1927 · Minnesota
★ You are viewing this record
Sibling
Helen Kaufman
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Kaufman
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Kaufman
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Kaufman
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeanne Kaufman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kaufman
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Blue-Earth-County, Minnesota
Open full size
1940 US Federal Census — Blue-Earth-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01908-00433)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Henry Klugherz | 81 | Head | — | Minnesota |
| 42 | Mary Klugherz | 71 | Wife | — | Austria |
| 43 | Walter W. Henkel | 29 | Head | Advertising | Minnesota |
| 44 | Irene Henkel | 28 | Wife | — | Minnesota |
| 45 | Arlene Henkel | 1 | Daughter | — | Minnesota |
| 46 | A. Martin Klages | 38 | Head | Salesman | Minnesota |
| 47 | Hattie Klages | 36 | Wife | Sales Clerk | Minnesota |
| 48 | Charleen Ann Klages | 14 | Daughter | — | Minnesota |
| 49 | George H. Standish | 33 | Brother-in-law | Pressman | Minnesota |
| 50 | Frank H. Bates | 43 | Head | Police Officer | Minnesota |
| 51 | Elizabeth M. Bates | 33 | Wife | — | Minnesota |
| 52 | Henry Meyer | 20 | Step-son | Farm Hand | Minnesota |
| 53 | Math S. Miller | 61 | Head | Night Watchman | Minnesota |
| 54 | Alvina Miller | 63 | Wife | — | Minnesota |
| 55 | Albert A. Paffrath | 63 | Head | Attendant | Minnesota |
| 56 | Laura Paffrath | 57 | Wife | — | Minnesota |
| 57 | Albert L. Paffrath | 23 | Son | Bus Driver | Minnesota |
| 58 | Arthur Stoehr | 30 | Head | Painter | Minnesota |
| 59 | Selma Stoehr | 31 | Wife | — | Minnesota |
| 60 | George B. Kaufman | 49 | Head | Sign Hanger | Iowa |
| 61 | Ann M. Kaufman | 45 | Wife | — | Minnesota |
| 62 | Donald Francis Kaufman | 18 | Son | Caddy | Minnesota |
| 63 | Jane F. Kaufman | 16 | Daughter | — | Minnesota |
| 64 | Jeanne Kaufman | 15 | Daughter | — | Minnesota |
| 65 | Mary Ann Kaufman THIS PERSON | 13 | Daughter | — | Minnesota |
| 66 | John J. Kaufman | 9 | Son | — | Minnesota |
| 67 | George D. Jr. Kaufman | 4 | Son | — | Minnesota |
| 68 | Helen Teresa Kaufman | 0 | Daughter | — | Minnesota |
| 69 | Tillie Kaser | 62 | Head | — | Germany |
| 70 | Minty Agnes Kaser | 38 | Daughter | — | Minnesota |
| 71 | Alois Kaser | 24 | Son | Truck Driver | Minnesota |
| 72 | Leona Kaser | 24 | Daughter | — | Minnesota |
| 73 | Leroy Kaser | 22 | Son | Laborer | Minnesota |
| 74 | Julia Hecker | 75 | Head | — | Minnesota |
| 75 | Raymond J. Miller | 27 | Head | Sch. Packer | Minnesota |
| 76 | Mabel A. Miller | 27 | Wife | — | Minnesota |
| 77 | Melvin Miller | 0 | Son | — | Minnesota |
| 78 | Clayton W. Runey | 26 | Head | Bottle Washer | Minnesota |
| 79 | Florence H. Runey | 25 | Wife | — | Minnesota |
| 80 | Robert Runey | 0 | Son | — | Minnesota |
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)