MF
Mary Fields — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sauk-County, Wisconsin
Our Model Tree links this Mary Fields across the 1930 and 1940 US Censuses in Sauk-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sauk-County, Wisconsin |
| Surname | Fields |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Reedsburg City |
| 1935 Residence (County) | Sauk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Reedsburg City |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Irene Fields | Daughter | — | 11 | ~1929 |
| Delores Fields | Daughter | — | 9 | ~1931 |
| Mary Fields | Daughter | — | 14 | ~1926 |
| James Fields | Head | — | 49 | ~1891 |
| Robert Fields | Son | — | 1 | ~1939 |
| James Fields | Son | — | 12 | ~1928 |
| Jerry Fields | Son | — | 6 | ~1934 |
| Leonard Fields | Son | — | 16 | ~1924 |
| Mary Fields | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Sauk, Wisconsin
Daughter, age 4
Sauk, Wisconsin · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fields |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Sauk-County, Wisconsin
Daughter, age 14
Sauk-County, Wisconsin · implied b. ~1926 — 9 household members
| Surname | Fields |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Reedsburg City |
| 1935 Residence (County) | Sauk |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Fields across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Fields
Daughter · 1940 · age 14 · b. ~1926 · Wisconsin
★ You are viewing this record
Sibling
Delores Fields
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Fields
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Fields
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Fields
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Fields
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Fields
Sibling · 1940 · age 12
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 — Sauk-County, Wisconsin
Open full size
1940 US Federal Census — Sauk-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04523-00668)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Wheeler | 19 | Roomer | New Worker | Wisconsin |
| 2 | Mistake In Count Extra Line | None | Mistake in Count | Mistake In Count | Mistake in Count |
| 3 | Henry D Hecht | 29 | Head | Knitter | Wisconsin |
| 4 | Mildred Hecht | 27 | Wife | — | Wisconsin |
| 5 | Donald Hecht | 5 | Son | — | Wisconsin |
| 6 | Lawrence Hecht | 2 | Son | — | Wisconsin |
| 7 | Otto Dr. Spordidod | 73 | Roomer | Med. Doctor | Germany |
| 8 | Robert Spordidod | 19 | Roomer | Bank Clerk | Wisconsin |
| 9 | Matilda Gade | 65 | Head | — | Wisconsin |
| 10 | Harvey C Ward | 39 | Head | Stone Cutter | Wisconsin |
| 11 | Ethel Ward | 31 | Wife | — | Oklahoma |
| 12 | Harvey Jr Ward | 12 | Son | — | Oklahoma |
| 13 | Donald Ward | 6 | Son | — | Wisconsin |
| 14 | Gordon Davis | 23 | Head | Laborer | Wisconsin |
| 15 | Hazel Davis | 22 | Wife | — | Iowa |
| 16 | Philip R. Davis | 2 | Son | — | Wisconsin |
| 17 | James D Fields | 49 | Head | Laborer | Illinois |
| 18 | Mary Anna Fields | 46 | Wife | — | Wisconsin |
| 19 | Leonard Fields | 16 | Son | Delivery Boy | Wisconsin |
| 20 | Mary Fields THIS PERSON | 14 | Daughter | — | Wisconsin |
| 21 | James Fields | 12 | Son | — | Wisconsin |
| 22 | Irene Fields | 11 | Daughter | — | Wisconsin |
| 23 | Delores Fields | 9 | Daughter | — | Wisconsin |
| 24 | Jerry Fields | 6 | Son | — | Wisconsin |
| 25 | Robert Fields | 1 | Son | — | Wisconsin |
| 26 | Ernest Wagner | 33 | Head | Spinner | Wisconsin |
| 27 | Evelyn Wagner | 31 | Wife | Spooler | Wisconsin |
| 28 | Ronald Wagner | 3 | Son | — | Wisconsin |
| 29 | Ferdinand Schmidt | 60 | Head | New Worker | Russia |
| 30 | Anna Schmidt | 57 | Wife | — | Wisconsin |
| 31 | Kenneth Schmidt | 15 | Son | — | Wisconsin |
| 32 | Dorothy Schmidt | 14 | Daughter | — | Wisconsin |
| 33 | Paul Busse | 37 | Head | Operator | Wisconsin |
| 34 | Alma Busse | 31 | Wife | — | Wisconsin |
| 35 | Gordon Busse | 12 | Son | — | Wisconsin |
| 36 | Bliss Crane | 24 | Head | — | Wisconsin |
| 37 | Clara Crane | 23 | Wife | — | Wisconsin |
| 38 | Gilbert Crane | 1 | Son | — | Wisconsin |
| 39 | Erich Zimnick | 35 | Head | Night Watchman | Germany |
| 40 | Gertrude Zimnick | 20 | Wife | — | 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)