MD
Mary Donohue — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Deer-Lodge-County, Montana
Our Model Tree links this Mary Donohue across the 1930 and 1940 US Censuses in Deer-Lodge-County, Montana (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Deer-Lodge-County, Montana |
| Surname | Donohue |
| Given Name | Mary Jo |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Anaconda 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Donohue | Daughter | — | 14 | ~1926 |
| Elizabeth Donohue | Spouse | — | 50 | ~1890 |
| Charlotte Lappin | Daughter | — | 23 | ~1917 |
| Timothy Donohue | Head | — | 60 | ~1880 |
| June Lappin | Daughter | — | 20 | ~1920 |
| Margaret Lappin | Daughter | — | 25 | ~1915 |
Census Appearances
1930
Deer Lodge, …
Daughter, age 4
Deer Lodge, Montana · implied b. ~1926 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donohue |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | North Ireland |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Deer-Lodge-County, Montana
Daughter, age 14
Deer-Lodge-County, Montana · implied b. ~1926 — 6 household members
| Surname | Donohue |
| Given Name | Mary Jo |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Donohue across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Donohue
Daughter · 1940 · age 14 · b. ~1926 · Montana
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Sibling
Charlotte Lappin
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lappin
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Lappin
Sibling · 1940 · age 20
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 — Deer-Lodge-County, Montana
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1940 US Federal Census — Deer-Lodge-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02217-00522)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Victor Pierce | 28 | Head | Laborer | Idaho |
| 2 | Esther S. Pierce | 28 | Wife | — | Montana |
| 3 | Joe Cirino | 32 | Head | Engine Driver | Montana |
| 4 | Philomena Cirino | 32 | Wife | — | Italy |
| 5 | Jean Cirino | 12 | Daughter | — | Italy |
| 6 | Emma Cirino | 10 | Daughter | — | Montana |
| 7 | Lena Cirino | 6 | Daughter | — | Montana |
| 8 | Thomas X. Salak | 63 | Head | Laborer | Eire |
| 9 | Margaret Salak | 49 | Wife | — | Eire |
| 10 | James J. Shilliedy | 45 | Head | Owner | Montana |
| 11 | Mert Shilliedy | 45 | Wife | — | Montana |
| 12 | John C. Bresnahan | 35 | Head | Flotation Operator | Montana |
| 13 | Anne Bresnahan | 25 | Wife | — | Montana |
| 14 | Barbara Bresnahan | 3 | Daughter | — | Montana |
| 15 | Grover Fenner | 27 | Head | Operator Phosphate | Montana |
| 16 | Marie Fenner | 24 | Wife | — | Montana |
| 17 | David Fenner | 3 | Son | — | Montana |
| 18 | Ronald Fenner | 1 | Son | — | Montana |
| 19 | Diane Fenner | 0 | Daughter | — | Montana |
| 20 | Peter Bubash | 32 | Head | Butcher | Montana |
| 21 | Margaret Bubash | 23 | Wife | — | Montana |
| 22 | Ernest Leonard | 35 | Head | Millman | Montana |
| 23 | Helen Leonard | 26 | Wife | — | Montana |
| 24 | John Woods | 25 | Brother-in-law | Laborer | Montana |
| 25 | Joe L. Thompson | 25 | Head | Part Owner | Montana |
| 26 | Gertrude Thompson | 25 | Wife | — | Minnesota |
| 27 | William E. Thompson | 2 | Son | — | Montana |
| 28 | Joe Kelly | 59 | Head | Owner | Minnesota |
| 29 | Eudamere Kelly | 42 | Wife | — | Minnesota |
| 30 | Joseph A. Kyle | 60 | Head | Foreman County Scale Tester | Illinois |
| 31 | Anna Kyle | 53 | Wife | — | Missouri |
| 32 | Joe B. Kyle | 16 | Son | — | Montana |
| 33 | Henrietta Morani | 71 | Head | — | Germany |
| 34 | David C. Mather | 72 | Head | Millman | Scotland |
| 35 | Timothy Donohue | 60 | Head | Furnace Tender | Eire |
| 36 | Elizabeth Donohue | 50 | Wife | — | Eire |
| 37 | Mary Jo Donohue THIS PERSON | 14 | Daughter | — | Montana |
| 38 | Margaret Lappin | 25 | Daughter | Nurse | Montana |
| 39 | Charlotte Lappin | 23 | Daughter | Stenographer | Montana |
| 40 | June Lappin | 20 | Daughter | — | Montana |
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)