BT
Barbara Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richland-County, Montana
Our Model Tree links this Barbara Thompson across the 1930 and 1940 US Censuses in Richland-County, Montana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Female
Daughter
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Richland-County, Montana |
| Surname | Thompson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Fairview Town |
| 1935 Residence (County) | Richland |
| Additional Details | |
| Highest Grade | H 6 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Fairview Town |
| Est. Birth Year | ~1928 |
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 Barbara | Age | Birth yr |
|---|---|---|---|---|
| James Thompson | Son | — | 7 | ~1933 |
| Drusilla Thompson | Daughter | — | 10 | ~1930 |
| Vivian Thompson | Spouse | — | 36 | ~1904 |
| William Thompson | Head | — | 43 | ~1897 |
| Michael Thompson | Son | — | 4 | ~1936 |
| Barbara Thompson | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Richland, Montana
Daughter, age 2
Richland, Montana · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Montana |
| Can Read/Write | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Richland-County, Montana
Daughter, age 12
Richland-County, Montana · implied b. ~1928 — 6 household members
| Surname | Thompson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Fairview Town |
| 1935 Residence (County) | Richland |
| Highest Grade | H 6 |
| 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 Barbara Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Thompson
Daughter · 1940 · age 12 · b. ~1928 · Montana
★ You are viewing this record
Sibling
James Thompson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Drusilla Thompson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Thompson
Sibling · 1940 · age 4
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 — Richland-County, Montana
Open full size
1940 US Federal Census — Richland-County, Montana
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02228-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Carroll Lund | 1 | Son | — | Montana |
| 42 | Sverre Sonnegaard | 29 | Head | — | Norway |
| 43 | William Thompson | 43 | Head | Postmaster | Minnesota |
| 44 | Vivian Thompson | 36 | Wife | — | Montana |
| 45 | Barbara Thompson THIS PERSON | 12 | Daughter | — | Montana |
| 46 | Drusilla Thompson | 10 | Daughter | — | Montana |
| 47 | James Thompson | 7 | Son | — | Montana |
| 48 | Michael Thompson | 4 | Son | — | Montana |
| 49 | Arnold C. Peterson | 30 | Head | Manager | North Dakota |
| 50 | Helen K. Peterson | 25 | Wife | — | Montana |
| 51 | Edith M. Peterson | 0 | Daughter | — | Montana |
| 52 | Ray S. Collines | 58 | Head | Co-Partner | Iowa |
| 53 | Edith L. Collines | 61 | Wife | — | Canada |
| 54 | Carlos P. Collines | 26 | Son | Co-Partner | Montana |
| 55 | Ella H. Wells | 70 | Head | — | Indiana |
| 56 | Alver Hanson | 40 | Head | Mechanic | North Dakota |
| 57 | Delilah Hanson | 40 | Wife | — | Michigan |
| 58 | Lester L. Hanson | 16 | Son | — | North Dakota |
| 59 | Archie L. Hanson | 12 | Son | — | North Dakota |
| 60 | Fred L. Kooken | 62 | Head | Carpenter | Iowa |
| 61 | Josephine Kooken | 60 | Wife | — | Wisconsin |
| 62 | Howard Ullman | 7 | Nephew | — | Montana |
| 63 | Ralph W. Johnston | 54 | Head | Service Man | Wisconsin |
| 64 | Hilda C. Johnston | 51 | Wife | — | Minnesota |
| 65 | Clarice A. Johnston | 20 | Daughter | Housekeeper | North Dakota |
| 66 | Ralph Junior Johnston | 12 | Son | — | Montana |
| 67 | Richard W. Logue | 5 | Grandson | — | Montana |
| 68 | Mary Helen Logue | 32 | Daughter | — | Montana |
| 69 | Emma Deming | 79 | Head | — | New York |
| 70 | Nellie B. Christianson | 57 | Daughter | — | Iowa |
| 71 | Rasmus Jacobson | 67 | Head | — | Norway |
| 72 | Margaret Jacobson | 74 | Wife | — | Norway |
| 73 | James E. Brunson | 60 | Head | Carpenter | Missouri |
| 74 | Minnie Brunson | 54 | Wife | — | Iowa |
| 75 | Cylie Eggleton | 35 | Son-in-law | Farm Hand | Minnesota |
| 76 | Sylvia Eggleton | 5 | Granddaughter | — | Montana |
| 77 | Harold H. Hammler | 39 | Head | Clerk | Wisconsin |
| 78 | Emma Hammler | 31 | 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)