MJ
Mary James — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fond-Du-Lac-County, Wisconsin
Our Model Tree links this Mary James across the 1930 and 1940 US Censuses in Fond-Du-Lac-County, Wisconsin (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fond-Du-Lac-County, Wisconsin |
| Surname | James |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Fond du Lac |
| 1935 Residence (County) | Fond du Lac |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Home |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Fond Du Lac |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Mary James | Daughter | — | 15 | ~1925 |
| Despena James | Daughter | — | 16 | ~1924 |
| Steve James | Head | — | 60 | ~1880 |
| James James | Son | — | 27 | ~1913 |
| Gus James | Son | — | 12 | ~1928 |
| John James | Son | — | 17 | ~1923 |
| Nicholas James | Son | — | 9 | ~1931 |
| Katherine James | Spouse | — | 54 | ~1886 |
Census Appearances
1930
Fond Du …
Daughter, age 4
Fond Du Lac, Wisconsin · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | James |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Greece |
| Mother's Birthplace | Greece |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Fond-Du-Lac-County, Wisconsin
Daughter, age 15
Fond-Du-Lac-County, Wisconsin · implied b. ~1925 — 8 household members
| Surname | James |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Fond du Lac |
| 1935 Residence (County) | Fond du Lac |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 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 James across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary James
Daughter · 1940 · age 15 · b. ~1925 · Wisconsin
★ You are viewing this record
Sibling
Gus James
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John James
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Despena James
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James James
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nicholas James
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 — Fond-Du-Lac-County, Wisconsin
Open full size
1940 US Federal Census — Fond-Du-Lac-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04479-00526)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Johnson | 34 | Head | Truck Driver | Oklahoma |
| 2 | Bertha X Johnson | 41 | Wife | — | Wisconsin |
| 3 | Alfred C. Mayer | 29 | Head | Machinist | Wisconsin |
| 4 | Eva L. Mayer | 21 | Wife | — | Michigan |
| 5 | Alfred Mayer | 5 | Son | — | Wisconsin |
| 6 | Alfred Flaherty | 55 | Head | Laborer | Wisconsin |
| 7 | Gertrude Flaherty | 54 | Wife | — | Wisconsin |
| 8 | Betty Flaherty | 13 | Daughter | — | Wisconsin |
| 9 | Antonel Sloger | 79 | Step father | — | Germany |
| 10 | Webster Crowell | 40 | Son-in-law | Tree Trimmer | Wisconsin |
| 11 | Agnes Crowell | 27 | Daughter | — | Wisconsin |
| 12 | Timothy Flaherty | 25 | Son | V2 | Wisconsin |
| 13 | Wanda Flaherty | 20 | Daughter-in-law | Tree Trimmer | Wisconsin |
| 14 | Leo O. Raffke | 25 | Head | Truck Driver | Wisconsin |
| 15 | Laverne M. Raffke | 23 | Wife | — | Wisconsin |
| 16 | Steve James | 60 | Head | 35 | — |
| 17 | Katherine James | 54 | Wife | — | — |
| 18 | James James | 27 | Son | Bartender | Greece |
| 19 | John James | 17 | Son | — | Wisconsin |
| 20 | Despena James | 16 | Daughter | — | Wisconsin |
| 21 | Mary James THIS PERSON | 15 | Daughter | — | Wisconsin |
| 22 | Gus James | 12 | Son | — | Wisconsin |
| 23 | Nicholas James | 9 | Son | — | Wisconsin |
| 24 | Arley O. Milch | 40 | Head | Truck Driver | Wisconsin |
| 25 | Lena B. Milch | 40 | Wife | — | Vermont |
| 26 | Arlen A. Milch | 19 | Son | — | Wisconsin |
| 27 | Richard W. Milch | 9 | Son | — | Wisconsin |
| 28 | Arthur P. Lietz | 33 | Head | Truck Driver | Wisconsin |
| 29 | Irene D. Lietz | 33 | Wife | — | Wisconsin |
| 30 | Curtis L. Lietz | 11 | Son | — | Wisconsin |
| 31 | Joyce D. Lietz | 6 | Daughter | — | Wisconsin |
| 32 | Hubert F. Maurice | 30 | Head | Bread Salesman | Wisconsin |
| 33 | Irene C. Maurice | 29 | Wife | — | Wisconsin |
| 34 | Robert W. Maurice | 6 | Son | — | Wisconsin |
| 35 | Roland H. Maurice | 2 | Son | — | Wisconsin |
| 36 | George Mathasopoulos | 50 | Head | Tavern Keeper | Greece |
| 37 | Georgine Mathasopoulos | 43 | Wife | — | Greece |
| 38 | Penny Mathasopoulos | 23 | Daughter | Knitter | Wisconsin |
| 39 | Christopher Mathasopoulos | 19 | Son | — | Wisconsin |
| 40 | Katherine Mathasopoulos | 11 | Daughter | — | Wisconsin |
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)