MW
Mary Warren — 1940 US Census Record
Model Tree available1940 United States Federal Census · Silver-Bow-County, Montana
Our Model Tree links this Mary Warren across the 1920, 1930 and 1940 US Censuses in Silver-Bow-County, Montana (XGBoost, ~Confirmed), with identified parents Frank & Minnie — first a daughter (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Daughter
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Silver-Bow-County, Montana |
| Surname | Warren |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Butte City |
| 1935 Residence (County) | Silver Bow |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Butte City |
| Est. Birth Year | ~1920 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Warren | Daughter | — | 20 | ~1920 |
| Margaret Warren | Daughter | — | 19 | ~1921 |
| Edna Warren | Daughter | — | 16 | ~1924 |
| Francis Warren | Head | — | 43 | ~1897 |
| Minnie Warren | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Silver Bow, …
Daughter, age 1
Silver Bow, Montana · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warren |
| Given Name | Mary F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Montana |
| Occupation | none |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Silver Bow, …
Daughter, age 11
Silver Bow, Montana · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warren |
| Given Name | Mary F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Montana |
| Mother's Birthplace | Montana |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Silver-Bow-County, Montana
Daughter, age 20
Silver-Bow-County, Montana · implied b. ~1920 — 5 household members
| Surname | Warren |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Butte City |
| 1935 Residence (County) | Silver Bow |
| Highest Grade | H 4 |
| 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 Warren across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Warren (~0.92 confidence) and mother Minnie Warren (~0.92 confidence) and mother Minnie Warren (~0.92 confidence) and father Francis Warren (~0.92 confidence) and father Frank Warren (~0.92 confidence) and mother Minnie Warren (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Warren
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Minnie Warren
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Minnie Warren
b. ~1894
Source mother
● Household
· direct · ~0.92
Father
Francis Warren
b. ~1897
Source father
● Household
· direct · ~0.92
Father
Frank Warren
b. ~1903
Source father
● Household
· direct · ~0.92
Mother
Minnie Warren
b. ~1906
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Warren
Daughter · 1940 · age 20 · b. ~1920 · Montana
★ You are viewing this record
Sibling
Margaret Warren
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Warren
Sibling · 1940 · age 16
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 — 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-t0627-02230-00838)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Shea | 52 | Sister | — | Michigan |
| 2 | J. Fred Glover | 60 | Head | Proprietor | Montana |
| 3 | Sophie S. Glover | 57 | Wife | Housewife | Montana |
| 4 | Charles W. Glover | 62 | Head | Proprietor | Montana |
| 5 | Emma M. Glover | 85 | Mother | Housewife | Missouri |
| 6 | Vincent Muzzalino | 70 | Head | Garbage Collector | Italy |
| 7 | Jennie Muzzalino | 67 | Wife | Housewife | Germany |
| 8 | John Muzzalino | 38 | Head | Proprietor | Montana |
| 9 | Mary Muzzalino | 37 | Wife | Housewife | Wyoming |
| 10 | John Jr. Muzzalino | 8 | Son | — | Montana |
| 11 | Betty Muzzalino | 6 | Daughter | — | Montana |
| 12 | Coral Muzzalino | 3 | Daughter | — | Montana |
| 13 | Johanna O'Neill | 59 | Head | Housewife | Michigan |
| 14 | John O'Neill | 34 | Son | Shipping Clerk | Montana |
| 15 | William O'Neill | 33 | Son | Shipping Clerk | Montana |
| 16 | Helen O'Neill | 31 | Daughter | Telephone Operator | Montana |
| 17 | Agnes O'Neill | 23 | Daughter | Bookkeeper | Montana |
| 18 | Francis J. Warren | 43 | Head | Engineer | Montana |
| 19 | Minnie Warren | 46 | Wife | Housewife | Montana |
| 20 | Mary Frances Warren THIS PERSON | 20 | Daughter | — | Montana |
| 21 | Margaret Ann Warren | 19 | Daughter | — | Montana |
| 22 | Edna June Warren | 16 | Daughter | — | Montana |
| 23 | Jeanette G. Fischer | 54 | Head | Economist | New York |
| 24 | Frances Fischer | 18 | Daughter | Clerk | Montana |
| 25 | Dimitri A. Belchopp | 51 | Head | Enforcement Officer | Bulgaria |
| 26 | Sophie V. Belchopp | 42 | Wife | Housewife | Wisconsin |
| 27 | Boris C. Belchopp | 22 | Son | Office Clerk | Montana |
| 28 | Thomas A. Collins | 65 | Head | Engineer | Pennsylvania |
| 29 | Margaret Collins | 61 | Wife | Housewife | Wisconsin |
| 30 | John J. Collins | 22 | Son | Truck Driver | Montana |
| 31 | Percy J. Hurley | 42 | Head | Clerk | Montana |
| 32 | Mark B. Hurley | 43 | Brother | Clerk | Montana |
| 33 | Oscar W. Ferrer | 56 | Head | Manager | Kansas |
| 34 | Ada May Ferrer | 79 | Mother | Housewife | Kentucky |
| 35 | John Dale Cramer | 25 | Nephew | Clerk | Montana |
| 36 | Catherine Donelson | 59 | Housekeeper | Housekeeper | Iowa |
| 37 | Edgar H. Reeder | 35 | Head | Auto Dealer | Illinois |
| 38 | Rhoda Reeder | 34 | Wife | Housewife | California |
| 39 | Thomas F. Power | 54 | Head | Proprietor | Montana |
| 40 | Lillian Power | 51 | Wife | Housewife | Montana |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 6 parents
~0.92
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)