MK
Mary Keefe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Buffalo-County, Wisconsin
Our Model Tree links this Mary Keefe across the 1930 and 1940 US Censuses in Buffalo-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buffalo-County, Wisconsin |
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Maxville |
| 1935 Residence (County) | Buffalo |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same home |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Maxville |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Arnold Keefe | Son | — | 5 | ~1935 |
| Thomas Keefe | Son | — | 19 | ~1921 |
| John Keefe | Son | — | 16 | ~1924 |
| John Keefe | Head | — | 78 | ~1862 |
| Margaret Keefe | Spouse | — | 44 | ~1896 |
| William Keefe | Son | — | 24 | ~1916 |
| Mary Keefe | Daughter | — | 18 | ~1922 |
| Regina Keefe | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Buffalo, Wisconsin
Daughter, age 8
Buffalo, Wisconsin · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Buffalo-County, Wisconsin
Daughter, age 18
Buffalo-County, Wisconsin · implied b. ~1922 — 8 household members
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Maxville |
| 1935 Residence (County) | Buffalo |
| Highest Grade | No 8 |
| 1935 Residence | Same home |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Keefe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keefe
Daughter · 1940 · age 18 · b. ~1922 · Wisconsin
★ You are viewing this record
Sibling
Thomas Keefe
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Keefe
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Keefe
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Keefe
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regina Keefe
Sibling · 1940 · age 7
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 — Buffalo-County, Wisconsin
Open full size
1940 US Federal Census — Buffalo-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04462-00266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ellen Campbell | 57 | Hired hand | Farm Laborer | Wisconsin |
| 42 | Harry Halling | 28 | Head | Mechanic | Wisconsin |
| 43 | Deloris Halling | 30 | Wife | — | Wisconsin |
| 44 | William Rathburn | 13 | Step son | — | Wisconsin |
| 45 | James Rathburn | 12 | Step son | — | Wisconsin |
| 46 | Robert Rathburn | 10 | Step son | — | Wisconsin |
| 47 | Clara-Mae Rathburn | 8 | Daughter | — | Wisconsin |
| 48 | Josetta Taylor | 83 | Aunt | — | New York |
| 49 | Henry Halling | 59 | Head | Laborer | Wisconsin |
| 50 | Minnie Halling | 49 | Wife | — | Wisconsin |
| 51 | Eva Halling | 14 | Daughter | — | Wisconsin |
| 52 | Frank E. Halling | 9 | Son | — | Wisconsin |
| 53 | Herbert Halling | 6 | Son | — | Wisconsin |
| 54 | Margaret Halling | 4 | Daughter | — | Wisconsin |
| 55 | Walter Schumacher | 43 | Head | Farmer | Wisconsin |
| 56 | John Keefe | 78 | Head | Farmer | Ireland |
| 57 | Margaret Keefe | 44 | Wife | — | Wisconsin |
| 58 | William Keefe | 24 | Son | Farm Laborer | Wisconsin |
| 59 | Thomas Keefe | 19 | Son | Farm Laborer | Wisconsin |
| 60 | Mary Keefe THIS PERSON | 18 | Daughter | — | Wisconsin |
| 61 | John Jr. Keefe | 16 | Son | Farm Laborer | Wisconsin |
| 62 | Regina Keefe | 7 | Daughter | — | Wisconsin |
| 63 | Arnold Keefe | 5 | Son | — | Wisconsin |
| 64 | Herman Klevgard | 28 | Head | Farmer | Wisconsin |
| 65 | Madeline Klevgard | 24 | Wife | — | Wisconsin |
| 66 | Stanley Klevgard | 5 | Son | — | Wisconsin |
| 67 | Muriel Klevgard | 4 | Daughter | — | Wisconsin |
| 68 | Michael Klevgard | 3 | Daughter | — | Wisconsin |
| 69 | Roland Klevgard | 2 | Son | — | Wisconsin |
| 70 | Frank Bilderback | 56 | Head | Laborer | Wisconsin |
| 71 | Ethel O. Bilderback | 46 | Wife | — | Iowa |
| 72 | Francis Bilderback | 20 | Son | — | South Dakota |
| 73 | Florence Bilderback | 18 | Daughter | — | South Dakota |
| 74 | Inez Bilderback | 16 | Daughter | — | South Dakota |
| 75 | Shirley Bilderback | 13 | Daughter | — | South Dakota |
| 76 | Harry Bilderback | 9 | Son | — | South Dakota |
| 77 | Charles Bilderback | 7 | Son | — | South Dakota |
| 78 | Victor Fedie | 35 | Head | Farmer | Wisconsin |
| 79 | Rose Fedie | 32 | Wife | — | Wisconsin |
| 80 | Dorothy Fedie | 6 | Daughter | — | Wisconsin |
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)