MP
Mary Peck — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lancaster-County, Nebraska
Our Model Tree links this Mary Peck across the 1930 and 1940 US Censuses in Lancaster-County, Nebraska (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 6-person household.
Age 10
b. ~1930
Female
Daughter
Born: Nebraska
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lancaster-County, Nebraska |
| Surname | Peck |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Lincoln City |
| 1935 Residence (County) | Lancaster |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Lincoln 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Peck | Daughter | — | 13 | ~1927 |
| Marjorie Peck | Daughter | — | 11 | ~1929 |
| Mary Peck | Daughter | — | 10 | ~1930 |
| George Peck | Head | — | 48 | ~1892 |
| George Peck | Son | — | 15 | ~1925 |
| Lillian Peck | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Lancaster, Nebraska
Daughter, age
Lancaster, Nebraska · implied b. ~1930 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peck |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Lancaster-County, Nebraska
Daughter, age 10
Lancaster-County, Nebraska · implied b. ~1930 — 6 household members
| Surname | Peck |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Lincoln City |
| 1935 Residence (County) | Lancaster |
| Highest Grade | 5 |
| 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 Peck across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Peck
Daughter · 1940 · age 10 · b. ~1930 · Nebraska
★ You are viewing this record
Sibling
George Peck
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Peck
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Peck
Sibling · 1940 · age 13
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 — Lancaster-County, Nebraska
Open full size
1940 US Federal Census — Lancaster-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02253-00906)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold D. Everth | 13 | Son | — | Nebraska |
| 2 | Marilyn J. Everth | 3 | Daughter | — | Nebraska |
| 3 | John E. Livingston | 28 | Head | Baker | Nebraska |
| 4 | Blanche Livingston | 28 | Wife | — | Nebraska |
| 5 | Brian Livingston | 3 | Son | — | Nebraska |
| 6 | Pete Maul | 59 | Head | — | Russia |
| 7 | Katherine Maul | 58 | Wife | — | Russia |
| 8 | Amelia Maul | 25 | Daughter | — | Iowa |
| 9 | John Maul | 21 | Son | Laborer | Nebraska |
| 10 | Marie Maul | 18 | Daughter | Laundry Worker | Nebraska |
| 11 | Martha Maul | 15 | Daughter | — | Nebraska |
| 12 | Alexander B. Maul | 28 | Head | Wheat Man Second Miller | Nebraska |
| 13 | Anna M. Maul | 23 | Wife | Launderer | Nebraska |
| 14 | Charles R. Firey | 46 | Head | Assnt. Supt. | Missouri |
| 15 | Beatrice T. Firey | 34 | Wife | — | Nebraska |
| 16 | George L. Peck | 48 | Head | Carpenter | Virginia |
| 17 | Lillian E. Peck | 41 | Wife | — | Nebraska |
| 18 | George L. Jr. Peck | 15 | Son | — | Nebraska |
| 19 | Dorothy J. Peck | 13 | Daughter | — | Nebraska |
| 20 | Marjorie L. Peck | 11 | Daughter | — | Nebraska |
| 21 | Mary A. Peck THIS PERSON | 10 | Daughter | — | Nebraska |
| 22 | J. Burt Bryant | 60 | Head | — | Illinois |
| 23 | Lillian M. Bryant | 52 | Wife | Book Repair | Nebraska |
| 24 | Fred Mitchell | 64 | Head | — | Missouri |
| 25 | Florence Mitchell | 65 | Wife | — | Ohio |
| 26 | Francisco Valencia | 56 | Head | — | Mexico |
| 27 | Maria Valencia | 39 | Wife | — | Mexico |
| 28 | Sylvester Valencia | 21 | Son | — | Mexico |
| 29 | Crispita Valencia | 18 | Daughter | — | Iowa |
| 30 | Louise Valencia | 17 | Daughter | — | Wyoming |
| 31 | Ida Valencia | 16 | Daughter | — | Nebraska |
| 32 | Charles Valencia | 14 | Son | — | Iowa |
| 33 | Phyllis Valencia | 11 | Daughter | — | Nebraska |
| 34 | Wannita Valencia | 9 | Daughter | — | Nebraska |
| 35 | Irene Valencia | 7 | Daughter | — | Nebraska |
| 36 | Mary Valencia | 5 | Daughter | — | Nebraska |
| 37 | Clara Valencia | 3 | Daughter | — | Nebraska |
| 38 | Gustav F. Bornemeier | 60 | Head | Stock Buyer | Germany |
| 39 | Permitara H. Bornemeier | 21 | Son | Salesman | Nebraska |
| 40 | John Kahler | 54 | Head | Custodian | Russia |
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)