AT
Agnes Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Silver-Bow-County, Montana
Our Model Tree links this Agnes Thomas across the 1920, 1930 and 1940 US Censuses in Silver-Bow-County, Montana (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Female
Spouse
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Silver-Bow-County, Montana |
| Surname | Thomas |
| Given Name | Agnes |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Butte |
| 1935 Residence (County) | Silver Bow |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Butte |
| Est. Birth Year | ~1891 |
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 Agnes | Age | Birth yr |
|---|---|---|---|---|
| Oliver Thomas | Son | — | 20 | ~1920 |
| Agnes Thomas | Spouse | — | 49 | ~1891 |
| Jack Thomas | Head | — | 59 | ~1881 |
Census Appearances
1920
Silver Bow, …
Spouse, age 31
Silver Bow, Montana · implied b. ~1889 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Agnes |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Grocery Clerk |
| Industry | Grocery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Silver Bow, …
Other, age 39
Silver Bow, Montana · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Agnes I. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 25 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Silver-Bow-County, Montana
Spouse, age 49
Silver-Bow-County, Montana · implied b. ~1891 — 3 household members
| Surname | Thomas |
| Given Name | Agnes |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Butte |
| 1935 Residence (County) | Silver Bow |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Agnes Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Agnes Thomas
Spouse · 1940 · age 49 · b. ~1891 · 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 — Silver-Bow-County, Montana
Open full size
1940 US Federal Census — Silver-Bow-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02230-00273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Shea | 14 | Son | — | Montana |
| 2 | John Shea | 12 | Son | — | Montana |
| 3 | Jeremiah Lowney | 27 | Head | Apprentice Engineer | Montana |
| 4 | Rita Lowney | 20 | Wife | — | Montana |
| 5 | Lenore Lowney | 3 | Son | — | Montana |
| 6 | Jeremiah Lowney | 2 | Son | — | Montana |
| 7 | Michael Slappa | 28 | Head | Station Tender | Montana |
| 8 | Margaret Slappa | 23 | Wife | — | Montana |
| 9 | Joan Ella Slappa | 1 | Daughter | — | Montana |
| 10 | James Noon | 21 | Brother-in-law | Time-Keeper | Montana |
| 11 | Peter Olsen | 53 | Head | Electrician | Wisconsin |
| 12 | Helen Olsen | 19 | Daughter | — | Wisconsin |
| 13 | Russell Olsen | 16 | Son | — | Michigan |
| 14 | Howard Olsen | 14 | Son | — | Michigan |
| 15 | Virginia Olsen | 12 | Daughter | — | Washington |
| 16 | Jack Thomas | 59 | Head | W.P.A. | Montana |
| 17 | Agnes Thomas THIS PERSON | 49 | Wife | — | Colorado |
| 18 | Oliver Thomas | 20 | Son | Stenographer | Montana |
| 19 | Lillie Andrews | 56 | Head | — | Montana |
| 20 | Olive Pearce | 35 | Daughter | Stenographer | Montana |
| 21 | Lois Salhi | 23 | Lodger | Cashier | Montana |
| 22 | M. F. Haley | 48 | Head | Sales Manager | Minnesota |
| 23 | Mary Haley | 44 | Wife | — | Oregon |
| 24 | Neill Haley | 23 | Son | Stenographer | North Dakota |
| 25 | Lawrence Haley | 19 | Son | — | North Dakota |
| 26 | Mary P. Haley | 14 | Daughter | — | North Dakota |
| 27 | Thomas Haley | 2 | Son | — | Montana |
| 28 | Albert Pearce | 45 | Head | Compressor Engineer | Michigan |
| 29 | Ada Pearce | 41 | Wife | — | Montana |
| 30 | Virginia Pearce | 18 | Daughter | — | Montana |
| 31 | Juanice Pearce | 13 | Daughter | — | Montana |
| 32 | Donna Pearce | 12 | Daughter | — | Montana |
| 33 | Catherine Penney | 62 | Head | Time-Keeper | Rhode Island |
| 34 | Margaret Penney | 27 | Daughter | File Clerk | Washington |
| 35 | John Penney | 23 | Son | New Worker | Montana |
| 36 | John Mcfadden | 65 | Head | Mining | Eire |
| 37 | Dayton Kennedy | 53 | Head | Book-Keeper | Nebraska |
| 38 | Mary Kennedy | 46 | Wife | — | Utah |
| 39 | Leonard Hogan | 34 | Head | Machinist | Montana |
| 40 | Helen Hogan | 25 | Wife | — | 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)