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Mary Walsh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mclean-County, North Dakota
Our Model Tree links this Mary Walsh across the 1930 and 1940 US Censuses in Mclean-County, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Female
Daughter
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, North Dakota |
| Surname | Walsh |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | T 148 R 86 |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | T 148 R 86 |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Walsh | Daughter | — | 15 | ~1925 |
| Theresa Walsh | Daughter | — | 10 | ~1930 |
| Maurice Walsh | Head | — | 59 | ~1881 |
| Thomas Walsh | Son | — | 20 | ~1920 |
| Robert Walsh | Son | — | 17 | ~1923 |
| Jerome Walsh | Son | — | 29 | ~1911 |
| Victor Walsh | Son | — | 19 | ~1921 |
| Paul Walsh | Son | — | 22 | ~1918 |
| Odella Walsh | Spouse | — | 56 | ~1884 |
Census Appearances
1930
Mclean, North …
Daughter, age 5
Mclean, North Dakota · implied b. ~1925 — 15 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mclean-County, North …
Daughter, age 15
Mclean-County, North Dakota · implied b. ~1925 — 9 household members
| Surname | Walsh |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | T 148 R 86 |
| 1935 Residence (County) | McLean |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Walsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Walsh
Daughter · 1940 · age 15 · b. ~1925 · North Dakota
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Sibling
Thomas Walsh
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Walsh
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Victor Walsh
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Walsh
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Walsh
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Walsh
Sibling · 1940 · age 22
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 — Mclean-County, North Dakota
Open full size
1940 US Federal Census — Mclean-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03006-00890)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Andrew A. Kezman | 50 | Head | Farmer | Minnesota |
| 2 | Matilda Kezman | 51 | Wife | — | Wisconsin |
| 3 | Ray Kezman | 26 | Son | Laborer | North Dakota |
| 4 | Leo Kezman | 23 | Son | Laborer | North Dakota |
| 5 | Arthur Kezman | 21 | Son | Labor | North Dakota |
| 6 | Elmer Kezman | 14 | Son | — | North Dakota |
| 7 | Mae Kezman | 9 | Daughter | — | North Dakota |
| 8 | Jerome M. Walsh | 32 | Head | Farmer | Minnesota |
| 9 | Stella Walsh | 24 | Wife | — | North Dakota |
| 10 | Norman Walsh | 6 | Son | — | North Dakota |
| 11 | Virginia Walsh | 4 | Daughter | — | North Dakota |
| 12 | Paul A. Massey | 30 | Head | Farmer | North Dakota |
| 13 | Adrie Massey | 32 | Wife | — | North Dakota |
| 14 | Paul Massey | 6 | Son | — | North Dakota |
| 15 | Arthur Massey | 4 | Son | — | North Dakota |
| 16 | Janice Massey | 2 | Daughter | — | North Dakota |
| 17 | Helge O. Gran | 72 | Head | Farmer | Norway |
| 18 | Mary Gran | 63 | Wife | — | Minnesota |
| 19 | Joe Gran | 35 | Son | — | North Dakota |
| 20 | August Hillem | 68 | Lodger | Laborer | Canada-Eng |
| 21 | Cecil Wilson | 33 | Head | Farmer | North Dakota |
| 22 | Myrtle Wilson | 22 | Wife | — | North Dakota |
| 23 | Roy J. Wilson | 1 | Son | — | North Dakota |
| 24 | Jackie Dean Wilson | 0 | Son | — | North Dakota |
| 25 | Grace Wilson | 57 | Mother | Practical Nursing | Iowa |
| 26 | Maurice J. Walsh | 59 | Head | Farmer | Minnesota |
| 27 | Odella Walsh | 56 | Wife | — | Minnesota |
| 28 | Jerome M. Walsh | 29 | Son | Laborer | North Dakota |
| 29 | Paul Walsh | 22 | Son | Labor | North Dakota |
| 30 | Thomas Walsh | 20 | Son | Labor | North Dakota |
| 31 | Victor A. Walsh | 19 | Son | C.C. Camp | North Dakota |
| 32 | Robert Walsh | 17 | Son | Labor | North Dakota |
| 33 | Mary A. Walsh THIS PERSON | 15 | Daughter | — | North Dakota |
| 34 | Theresa A. Walsh | 10 | Daughter | — | North Dakota |
| 35 | N. H. Fredrickson | 48 | Head | Farmer | Iowa |
| 36 | Mary Fredrickson | 33 | Wife | — | North Dakota |
| 37 | Ralph Fredrickson | 13 | Son | — | North Dakota |
| 38 | Bernice Fredrickson | 11 | Daughter | — | North Dakota |
| 39 | Donna Fredrickson | 7 | Daughter | — | North Dakota |
| 40 | N. J. Olson | 56 | Head | Farmer | Michigan |
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)