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Mary Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Platte-County, Nebraska
Our Model Tree links this Mary Brock across the 1930 and 1940 US Censuses in Platte-County, Nebraska (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Platte-County, Nebraska |
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Columbus city |
| 1935 Residence (County) | Platte |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Columbus City |
| Est. Birth Year | ~1930 |
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 |
|---|---|---|---|---|
| Margret Brock | Spouse | — | 50 | ~1890 |
| John Brock | Son | — | 12 | ~1928 |
| Joyce Brock | Daughter | — | 5 | ~1935 |
| William Brock | Son | — | 19 | ~1921 |
| Charles Brock | Head | — | 59 | ~1881 |
| Fred Brock | Son | — | 15 | ~1925 |
| Mary Brock | Daughter | — | 10 | ~1930 |
| James Brock | Son | — | 20 | ~1920 |
Census Appearances
1930
Platte, Nebraska
Daughter, age
Platte, Nebraska · implied b. ~1930 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Pennsylvania |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Platte-County, Nebraska
Daughter, age 10
Platte-County, Nebraska · implied b. ~1930 — 8 household members
| Surname | Brock |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Columbus city |
| 1935 Residence (County) | Platte |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Brock
Daughter · 1940 · age 10 · b. ~1930 · Nebraska
★ You are viewing this record
Sibling
Joyce Brock
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Brock
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Brock
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Brock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Brock
Sibling · 1940 · age 12
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 — Platte-County, Nebraska
Open full size
1940 US Federal Census — Platte-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02261-00217)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Delores Could | 13 | Daughter | — | Nebraska |
| 42 | Raymond Jacobs | 47 | Head | Carpenter | Nebraska |
| 43 | Luella Jacobs | 42 | Wife | — | Nebraska |
| 44 | Marjorie Jacobs | 17 | Daughter | — | South Dakota |
| 45 | Mary Jean Jacobs | 13 | Daughter | — | Iowa |
| 46 | Raymond Jr. Jacobs | 12 | Son | — | South Dakota |
| 47 | Daniel Jacobs | 10 | Son | — | South Dakota |
| 48 | Floyd Kyner | 26 | Head | Truck Driver | South Dakota |
| 49 | Elvina Kyner | 24 | Wife | — | Nebraska |
| 50 | Donald Kyner | 2 | Son | — | Nebraska |
| 51 | Gerald Kyner | 0 | Son | — | Nebraska |
| 52 | Herman Christensen | 46 | Head | Foreman | Nebraska |
| 53 | Sylvia Christensen | 50 | Wife | — | Nebraska |
| 54 | Herman Jr. Christensen | 15 | Son | — | Nebraska |
| 55 | Chris Wunderlich | 62 | Head | Owner | Germany |
| 56 | Rosa Wunderlich | 64 | Wife | — | Germany |
| 57 | Louise Wunderlich | 30 | Daughter | Waitress | Nebraska |
| 58 | Albert Wunderlich | 21 | Son | Bartender | Nebraska |
| 59 | Lydia Simon | 35 | Head | Servant | Nebraska |
| 60 | Clarence Mock | 29 | Head | Truck Driver | Nebraska |
| 61 | Luella Mock | 27 | Wife | — | Nebraska |
| 62 | Lorin Mock | 7 | Son | — | Nebraska |
| 63 | Alvin Cooney | 34 | Head | Auto Salesman | Nebraska |
| 64 | Loraine Cooney | 33 | Wife | Stenographer | Nebraska |
| 65 | Janice Cooney | 7 | Daughter | — | Nebraska |
| 66 | Charles Brock | 59 | Head | Foreman | Missouri |
| 67 | Margret Brock | 50 | Wife | — | Nebraska |
| 68 | James Brock | 20 | Son | — | Nebraska |
| 69 | William Brock | 19 | Son | — | Nebraska |
| 70 | Fred Brock | 15 | Son | — | Nebraska |
| 71 | John Brock | 12 | Son | — | Nebraska |
| 72 | Mary Brock THIS PERSON | 10 | Daughter | — | Nebraska |
| 73 | Joyce Ann Brock | 5 | Daughter | — | Nebraska |
| 74 | Frank Mull | 44 | Head | Tinner | Nebraska |
| 75 | Ruby Mull | 45 | Wife | — | Nebraska |
| 76 | Robert Mull | 19 | Son | — | Nebraska |
| 77 | Gustav Gelling | 52 | Head | Owner | Germany |
| 78 | Rose Gelling | 48 | Wife | Cook | Nebraska |
| 79 | Frieda Gelling | 23 | Daughter | Waitress | Nebraska |
| 80 | Clarence Gelling | 21 | Son | Truck Driver | Nebraska |
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)