MH
Mary Harris — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cascade-County, Montana
Our Model Tree links this Mary Harris across the 1920, 1930 and 1940 US Censuses in Cascade-County, Montana (XGBoost, ~Confirmed), with identified parents Guy & Nellie — first a daughter (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Female
Daughter
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cascade-County, Montana |
| Surname | Harris |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Great Falls City |
| 1935 Residence (County) | Cascade |
| Additional Details | |
| Income (1939) | 48 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Great Falls City |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| Mary Harris | Daughter | — | 22 | ~1918 |
| Guy Harris | Head | — | 51 | ~1889 |
| Helen Harris | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Cascade, Montana
Daughter, age 1
Cascade, Montana · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Wisconsin |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Cascade, Montana
Daughter, age 12
Cascade, Montana · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Mary P |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Cascade-County, Montana
Daughter, age 22
Cascade-County, Montana · implied b. ~1918 — 3 household members
| Surname | Harris |
| Given Name | Mary P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Great Falls City |
| 1935 Residence (County) | Cascade |
| Income (1939) | 48 |
| Highest Grade | C 1 |
| 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 Harris across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Guy Harris (~0.92 confidence) and mother Nellie Harris (~0.92 confidence) and mother Helen Harris (~0.92 confidence) and father Sidney Willis (~0.84 confidence) and mother Anna Willis (~0.84 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
Guy Harris
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Nellie Harris
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Helen Harris
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Sidney Willis
b. ~1862
Source father>father
● Household
· direct · ~0.84
Mother
Anna Willis
b. ~1870
Source father>mother
● Household
· direct · ~0.84
This person
Anchor record
Mary Harris
Daughter · 1940 · age 22 · b. ~1918 · Montana
★ 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 — Cascade-County, Montana
Open full size
1940 US Federal Census — Cascade-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02214-00074)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John D. Baker | 18 | Son | Office Boy | Montana |
| 42 | Frank K. B. Drown | 66 | Head | President Manager | Canada English |
| 43 | Mary A. Drown | 55 | Wife | — | Canada English |
| 44 | Rosemary Drown | 20 | Daughter | Sales Lady | Montana |
| 45 | Charles T. Busha | 47 | Head | Lawyer | Montana |
| 46 | Harriet B. Busha | 44 | Wife | — | Montana |
| 47 | Thomas S. Busha | 16 | Son | — | Montana |
| 48 | Luella Breding | 26 | Servant | House Work | North Dakota |
| 49 | Nellie L. Cheely | 52 | Head | President | Iowa |
| 50 | Elizabeth A. Ingram | 18 | Niece | — | Illinois |
| 51 | Mario B. Restell | 46 | Head | Bottler | Montana |
| 52 | Elizabeth A. Restell | 33 | Wife | — | Montana |
| 53 | Mary A. Restell | 9 | Daughter | — | Montana |
| 54 | John P. Restell | 7 | Son | — | Montana |
| 55 | Anna M. Tombrink | 73 | Head | — | Illinois |
| 56 | Lillian L. Tombrink | 31 | Daughter | Waitress | Illinois |
| 57 | Arthur F. Belzer | 52 | Head | Proprietor Manager | Iowa |
| 58 | Addie E. Belzer | 49 | Wife | — | Montana |
| 59 | Annetta M. Belzer | 19 | Daughter | — | Montana |
| 60 | Jane L. Lyons | 18 | Servant | House Maid | Montana |
| 61 | Allie Mae Barnes | 41 | Head | Sales Lady | Iowa |
| 62 | Helen M. Barnes | 20 | Daughter | Sales Lady | South Dakota |
| 63 | O. E. Jr. Barnes | 16 | Son | — | Minnesota |
| 64 | Mira H. Durham | 82 | Head | — | New York |
| 65 | Lyla M. Scranton | 70 | Lodger | — | Connecticut |
| 66 | Ruby G. Borghardt | 45 | Servant | House Keeper | Montana |
| 67 | Robert A. Nathan | 55 | Head | Real Estate Dealer | Montana |
| 68 | Henrietta L. Nathan | 40 | Wife | — | Minnesota |
| 69 | Joseph F. Hirshberg | 18 | Stepson | — | Washington |
| 70 | Edward Hirshberg | 16 | Stepson | — | Montana |
| 71 | Lillian K. Mick | 24 | Maid | House Maid | Canada English |
| 72 | Robert Smith | 58 | Head | Painter | Wisconsin |
| 73 | Nellie G. Smith | 53 | Wife | — | Minnesota |
| 74 | Guy E. Harris | 51 | Head | Manager | Montana |
| 75 | Helen L. Harris | 48 | Wife | — | Wisconsin |
| 76 | Mary P. Harris THIS PERSON | 22 | Daughter | — | Montana |
| 77 | James J. Regan | 70 | Head | Night Watchman | England |
| 78 | Alice Regan | 69 | Wife | — | New York |
| 79 | Donald V. Regan | 37 | Son | Truck Driver | Minnesota |
| 80 | James E. Regan | 35 | Son | Laborer | Minnesota |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.84
Max depth 4 (1900–1950 window)
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)