MH
Mary Harrington — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Deer-Lodge-County, Montana
Our Model Tree links this Mary Harrington across the 1920, 1930 and 1940 US Censuses in Deer-Lodge-County, Montana (XGBoost, ~Confirmed) — first a spouse (b.~1896), then head of a 3-person household.
Age 44
b. ~1896
Female
Spouse
Born: Montana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Deer-Lodge-County, Montana |
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Montana |
| 1935 Residence (City) | School District No 10 Outside Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | School District No 10 Outside Anaconda City |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| Edward Harrington | Head | — | 45 | ~1895 |
| Francis Harrington | Son | — | 13 | ~1927 |
| Mary Harrington | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Deer Lodge, …
Spouse, age 24
Deer Lodge, Montana · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Montana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Deer Lodge, …
Other, age 34
Deer Lodge, Montana · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | Mary E. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Montana |
| Age at First Marriage | 19 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Deer-Lodge-County, Montana
Spouse, age 44
Deer-Lodge-County, Montana · implied b. ~1896 — 3 household members
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Montana |
| 1935 Residence (City) | School District No 10 Outside Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Harrington across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harrington
Spouse · 1940 · age 44 · b. ~1896 · Montana
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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
Open full size
1940 US Federal Census — Deer-Lodge-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02217-00795)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert J. Kelly | 20 | Son | Laborer | Montana |
| 42 | Peter Matesich | 51 | Head | Engineer | Yugoslavia |
| 43 | Mary A. Matesich | 51 | Wife | — | Minnesota |
| 44 | William F. Matesich | 12 | Son | — | Montana |
| 45 | John Wilkinson | 27 | Head | Furnace Man | England |
| 46 | Lucille H. Wilkinson | 25 | Wife | — | Montana |
| 47 | Rodney R. Mclean | 26 | Head | Operator | Montana |
| 48 | Rose C. Mclean | 23 | Wife | — | Montana |
| 49 | James R. Mclean | 2 | Son | — | Montana |
| 50 | Edwin E. Forsman | 49 | Head | Barber | Sweden |
| 51 | Augusta E. Forsman | 48 | Wife | — | Montana |
| 52 | Martin Beatty | 55 | Head | Fireman In | Irish Free State |
| 53 | Bridget Beatty | 53 | Wife | — | Irish Free State |
| 54 | Martin T. Beatty | 24 | Son | Laborer | Montana |
| 55 | Nora Beatty | 22 | Daughter | Registered Nurse | Montana |
| 56 | John Beatty | 20 | Son | Laborer In | Montana |
| 57 | Matt P. Beatty | 19 | Son | Laborer | Montana |
| 58 | Mary Beatty | 16 | Daughter | — | Montana |
| 59 | Malick Beatty | 15 | Son | — | Montana |
| 60 | Helen Beatty | 13 | Daughter | — | Montana |
| 61 | Malcom Patterson | 71 | Head | — | Sweden |
| 62 | Robert E. Long | 30 | Head | Draftsman | Montana |
| 63 | Nellie Long | 31 | Wife | — | Montana |
| 64 | Pearl Ann Long | 5 | Daughter | — | Montana |
| 65 | Albert R. Davidsen | 45 | Lodger | Weatherman Clerk | Minnesota |
| 66 | James W. Hogan | 51 | Head | Assistant Manager | Minnesota |
| 67 | Hattie Hogan | 49 | Wife | — | Montana |
| 68 | Charles J. Hogan | 25 | Son | Mill Laborer | Montana |
| 69 | Edward Q. Emmett | 58 | Head | Watchman | England |
| 70 | Annie J. Emmett | 57 | Wife | — | England |
| 71 | Frank T. Mchugh | 42 | Head | Flotation Operator | Montana |
| 72 | Helen K. Mchugh | 41 | Wife | — | Illinois |
| 73 | Willard S. Mchugh | 16 | Son | — | Montana |
| 74 | William F. Mchugh | 16 | Son | — | Montana |
| 75 | Mavis L. Mchugh | 5 | Daughter | — | Montana |
| 76 | Edward J. Harrington | 45 | Head | Lime Kiln Burner | Michigan |
| 77 | Mary Harrington THIS PERSON | 44 | Wife | — | Montana |
| 78 | Francis J. Harrington | 13 | Son | — | Montana |
| 79 | John L. Ehlmann | 77 | Head | — | Ohio |
| 80 | Margaret Ehlmann | 65 | Wife | — | Nebraska |
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)