MB
Mary Brooks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Minnesota
Our Model Tree links this Mary Brooks across the 1920, 1930 and 1940 US Censuses in Cass-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 5-person household.
Age 51
b. ~1889
Female
Spouse
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Minnesota |
| Surname | Brooks |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Boy River |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Boy River |
| Est. Birth Year | ~1889 |
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 |
|---|---|---|---|---|
| John Brooks | Head | — | 53 | ~1887 |
| J Brooks | Son | — | 19 | ~1921 |
| Inza Brooks | Son | — | 10 | ~1930 |
| R Brooks | Son | — | 19 | ~1921 |
| Mary Brooks | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Cass, Minnesota
Spouse, age 31
Cass, Minnesota · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Cass, Minnesota
Other, age 40
Cass, Minnesota · implied b. ~1890 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brooks |
| Given Name | Mary A. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 19 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Cass-County, Minnesota
Spouse, age 51
Cass-County, Minnesota · implied b. ~1889 — 5 household members
| Surname | Brooks |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Boy River |
| 1935 Residence (County) | Cass |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Brooks across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brooks
Spouse · 1940 · age 51 · b. ~1889 · Minnesota
★ 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 — Cass-County, Minnesota
Open full size
1940 US Federal Census — Cass-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01912-00094)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | June M. Lund | 5 | Daughter | — | Minnesota |
| 42 | Lois A. Lund | 3 | Daughter | — | Minnesota |
| 43 | Bruce A. Lund | 1 | Son | — | Minnesota |
| 44 | Betty J. Lund | 0 | Daughter | — | Minnesota |
| 45 | Charles T. Cleveland | 33 | Head | Farmer | North Dakota |
| 46 | Mabel E. Cleveland | 19 | Wife | — | Minnesota |
| 47 | Nelson J. Bailey | 71 | Head | — | Pennsylvania |
| 48 | Elizabeth M. Bailey | 59 | Wife | — | Iowa |
| 49 | Loren J. Bailey | 25 | Son | Laborer | Minnesota |
| 50 | John C. Brooks | 53 | Head | Farmer | Iowa |
| 51 | Mary Brooks THIS PERSON | 51 | Wife | — | Michigan |
| 52 | R. G. Brooks | 19 | Son | Baker | Minnesota |
| 53 | J. C. Brooks | 19 | Son | Laborer | Minnesota |
| 54 | Inza R. Brooks | 10 | Son | — | Minnesota |
| 55 | James E. Connolly | 72 | Head | Farmer | Minnesota |
| 56 | Bessie I. Connolly | 30 | Wife | — | Minnesota |
| 57 | James E. Jr. Connolly | 13 | Son | — | Minnesota |
| 58 | Nathalene J. Connolly | 11 | Daughter | — | Minnesota |
| 59 | Nona L. Connolly | 11 | Daughter | — | Wisconsin |
| 60 | Beatrice E. Connolly | 9 | Daughter | — | Wisconsin |
| 61 | David W. Connolly | 7 | Son | — | Wisconsin |
| 62 | Donna Rae Connolly | 5 | Daughter | — | Wisconsin |
| 63 | James E. Robbins | 28 | Head | Farmer | Minnesota |
| 64 | Alice M. Robbins | 22 | Wife | — | Minnesota |
| 65 | Richard E. Robbins | 4 | Son | — | Minnesota |
| 66 | Betty R. Robbins | 3 | Daughter | — | Minnesota |
| 67 | Lester J. Robbins | 2 | Son | — | Minnesota |
| 68 | Ray E. Robbins | 51 | Head | Farmer | Iowa |
| 69 | Rose E. Robbins | 49 | Wife | — | Minnesota |
| 70 | Bernard Robbins | 24 | Son | Laborer | Minnesota |
| 71 | Jim W. Robbins | 19 | Son | Laborer | Minnesota |
| 72 | Ernest J. Robbins | 17 | Son | — | Minnesota |
| 73 | William D. Holt | 35 | Head | Laborer | North Dakota |
| 74 | Ida M. Holt | 35 | Wife | — | North Dakota |
| 75 | Opal J. Holt | 8 | Daughter | — | Minnesota |
| 76 | Billy O. Holt | 5 | Son | — | Minnesota |
| 77 | Robert L. Holt | 4 | Son | — | Minnesota |
| 78 | Leona M. Holt | 3 | Daughter | — | Minnesota |
| 79 | Clifford H. Barstow | 39 | Head | Farmer | Iowa |
| 80 | Evelyn C. Barstow | 38 | Wife | — | Iowa |
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)