MG
Mary Gallagher — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, North Dakota
Our Model Tree links this Mary Gallagher across the 1920, 1930 and 1940 US Censuses in Mercer-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1882), then head of a 3-person household.
Age 58
b. ~1882
Female
Spouse
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, North Dakota |
| Surname | Gallagher |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Twp 144-87 |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Twp 14487 |
| Est. Birth Year | ~1882 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jack Gallagher | Head | — | 61 | ~1879 |
| Aldo Gallagher | Son | — | 23 | ~1917 |
| Mary Gallagher | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Mercer, North …
Spouse, age 37
Mercer, North Dakota · implied b. ~1883 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gallagher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mercer, North …
Spouse, age 47
Mercer, North Dakota · implied b. ~1883 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gallagher |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mercer-County, North …
Spouse, age 58
Mercer-County, North Dakota · implied b. ~1882 — 3 household members
| Surname | Gallagher |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Twp 144-87 |
| 1935 Residence (County) | Mercer |
| Industry | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| 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 Gallagher across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Gallagher
Spouse · 1940 · age 58 · b. ~1882 · North Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mercer-County, North Dakota
Open full size
1940 US Federal Census — Mercer-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03007-00165)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Matthies | 15 | son | Farm Laborer | North Dakota |
| 2 | Edwin Matthies | 14 | son | — | North Dakota |
| 3 | Erna Matthies | 7 | daughter | — | North Dakota |
| 4 | Leona Matthies | 5 | daughter | — | North Dakota |
| 5 | Christ Kinsella | 41 | head | Farmer | Russia |
| 6 | Pauline P Kinsella | 35 | wife | — | North Dakota |
| 7 | Irene Kinsella | 11 | daughter | — | North Dakota |
| 8 | Raymond Kinsella | 8 | son | — | North Dakota |
| 9 | June Marie Kinsella | 3 | daughter | — | North Dakota |
| 10 | Herbert A Sailer | 31 | head | Farmer | North Dakota |
| 11 | Louise Sailer | 26 | wife | — | North Dakota |
| 12 | Allen Sailer | 2 | son | — | North Dakota |
| 13 | Francis B Koehler | 51 | head | Farmer | Russia |
| 14 | Edward Koehler | 25 | son | Farm Laborer | North Dakota |
| 15 | Albert Koehler | 21 | son | Farm Laborer | North Dakota |
| 16 | Irene Koehler | 14 | daughter | — | North Dakota |
| 17 | Erna Koehler | 13 | daughter | — | North Dakota |
| 18 | George D Gleason | 60 | head | Farmer | Minnesota |
| 19 | Frances Gleason | 49 | wife | — | North Dakota |
| 20 | Clarence Gleason | 27 | son | Farm Laborer | North Dakota |
| 21 | Leo Gleason | 28 | son | Teacher | North Dakota |
| 22 | Denis Gleason | 18 | son | — | North Dak. |
| 23 | Jim Gleason | 17 | son | — | North Dakota |
| 24 | Doris Gleason | 14 | daughter | — | North Dakota |
| 25 | Jeanette Gleason | 11 | daughter | — | North Dakota |
| 26 | Darrel Gleason | 8 | son | — | North Dakota |
| 27 | Earl G. X Alkire | 59 | head | Farmer | Missouri |
| 28 | Frankie Alkire | 55 | wife | — | Indiana |
| 29 | Lawrence Alkire | 33 | son | Farm Laborer | North Dakota |
| 30 | Dorothy Alkire | 15 | daughter | — | North Dakota |
| 31 | Otto E. X Oster | 33 | head | Farmer | North Dakota |
| 32 | Frieda Oster | 31 | wife | — | North Dakota |
| 33 | Ernest Oster | 9 | son | — | North Dakota |
| 34 | James Oster | 2 | son | — | North Dakota |
| 35 | Arthur Marschel | 16 | hired-hand | Farm Laborer | North Dakota |
| 36 | Jack D Gallagher | 61 | head | Farmer | Iowa |
| 37 | Mary Gallagher THIS PERSON | 58 | wife | — | North Dakota |
| 38 | Aldo Gallagher | 23 | son | Farm Laborer | North Dakota |
| 39 | William D Fandrich | 39 | head | — | North Dakota |
| 40 | Elda Fandrich | 38 | wife | — | North Dakota |
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)