MP
Mary Pollock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cass-County, Minnesota
Our Model Tree links this Mary Pollock across the 1930 and 1940 US Censuses in Cass-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Minnesota |
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Bull Moose |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Clerking in school office |
| Industry | N.Y.A. |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 12 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Clerking In School Office |
| Township / Ward | Bull Moose |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Dollie Pollock | Spouse | — | 33 | ~1907 |
| Lester Pollock | Son | — | 8 | ~1932 |
| Mary Pollock | Daughter | — | 16 | ~1924 |
| Lester Pollock | Head | — | 37 | ~1903 |
| Theodore Pollock | Son | — | 14 | ~1926 |
| Bobby Pollock | Son | — | 3 | ~1937 |
| Madeline Pollock | Daughter | — | 12 | ~1928 |
| Barbara Pollock | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Cass, Minnesota
Daughter, age 7
Cass, Minnesota · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pollock |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Cass-County, Minnesota
Daughter, age 16
Cass-County, Minnesota · implied b. ~1924 — 8 household members
| Surname | Pollock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Bull Moose |
| 1935 Residence (County) | Cass |
| Occupation | Clerking in school office |
| Industry | N.Y.A. |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 12 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Pollock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Pollock
Daughter · 1940 · age 16 · b. ~1924 · Minnesota
★ You are viewing this record
Sibling
Theodore Pollock
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Pollock
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Pollock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bobby Pollock
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Pollock
Sibling · 1940 · age 8
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 — 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-t0627-01912-00103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence E. Howe | 31 | Head | Farmer | Minnesota |
| 2 | Edna Howe | 32 | Wife | — | Colorado |
| 3 | Loris Howe | 8 | Daughter | — | Minnesota |
| 4 | Clarence E. Jr. Howe | 3 | Son | — | Minnesota |
| 5 | Arnold E. Ellestad | 42 | Head | Farmer | Minnesota |
| 6 | Helen Ellestad | 42 | Wife | — | Kansas |
| 7 | Vernon Ellestad | 20 | Son | Farm Laborer | Minnesota |
| 8 | Gordon N. Ellestad | 10 | Son | — | Minnesota |
| 9 | Irma J. Ellestad | 1 | Daughter | — | Minnesota |
| 10 | Harry A. Larson | 47 | Head | Farmer | Minnesota |
| 11 | Maura Larson | 42 | Wife | — | Iowa |
| 12 | Allen Larson | 18 | Son | — | Minnesota |
| 13 | Evelyn Larson | 16 | Daughter | — | Minnesota |
| 14 | Adeline Larson | 12 | Daughter | — | Minnesota |
| 15 | Ervin J. Bradow | 42 | Head | Farmer | Minnesota |
| 16 | Agnes Bradow | 38 | Wife | — | Minnesota |
| 17 | George A. Bradow | 17 | Son | Farm Laborer | Minnesota |
| 18 | Arthur Bradow | 15 | Son | — | Minnesota |
| 19 | Lola Bradow | 13 | Daughter | — | Minnesota |
| 20 | Ervin J. Jr. Bradow | 12 | Son | — | Minnesota |
| 21 | Marjorie Bradow | 10 | Daughter | — | Minnesota |
| 22 | Russel Bradow | 7 | Son | — | Minnesota |
| 23 | Betty Bradow | 4 | Daughter | — | Minnesota |
| 24 | Duane Bradow | 2 | Son | — | Minnesota |
| 25 | Lester J. Pollock | 37 | Head | Farmer | Missouri |
| 26 | Dollie Pollock | 33 | Wife | — | Minnesota |
| 27 | Mary Pollock THIS PERSON | 16 | Daughter | Clerking In School Office | Minnesota |
| 28 | Theodore Pollock | 14 | Son | — | Minnesota |
| 29 | Madeline Pollock | 12 | Daughter | — | Minnesota |
| 30 | Lester J. Jr. Pollock | 8 | Son | — | Minnesota |
| 31 | Barbara J. Pollock | 5 | Daughter | — | Minnesota |
| 32 | Bobby W. Pollock | 3 | Son | — | Minnesota |
| 33 | John O. Wahlquist | 80 | Head | — | Sweden |
| 34 | William Schwarz | 32 | Head | Farmer | Minnesota |
| 35 | Charles K. Large | 38 | Head | Dump Boss Highway Maintaining | Iowa |
| 36 | Edna Large | 33 | Wife | — | Iowa |
| 37 | Jack Large | 11 | Son | — | Minnesota |
| 38 | Ethel M. Large | 6 | Daughter | — | Iowa |
| 39 | Amos Large | 4 | Son | — | Minnesota |
| 40 | Charles E. Large | 2 | Son | — | Minnesota |
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)