MC
Mary Cook — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lancaster, Nebraska
Our Model Tree links this Mary Cook across the 1920, 1930 and 1940 US Censuses in Lancaster, Nebraska (XGBoost, ~Confirmed), with identified parents A & Alva — first a daughter (b.~1908), then head of a 4-person household.
Age 22
b. ~1908
Female
Daughter
Born: Nebraska
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lancaster, Nebraska |
| Surname | Cook |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Lincoln City |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cook | Daughter | — | 22 | ~1908 |
| Alva Cook | Head | — | 59 | ~1871 |
| Mattie Cook | Other | — | 49 | ~1881 |
| Lewis Cook | Son | — | 17 | ~1913 |
Census Appearances
1920
Lancaster, Nebraska
Daughter, age 12
Lancaster, Nebraska · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Lancaster, Nebraska
Daughter, age 22
Lancaster, Nebraska · implied b. ~1908 — 4 household members
| Surname | Cook |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Lancaster-County, Nebraska
Daughter, age 33
Lancaster-County, Nebraska · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooke |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Divorced |
| Birthplace | Nebraska |
| 1935 Residence (City) | Lincoln city |
| 1935 Residence (County) | Lancaster |
| Hours Worked | 0 |
| Highest Grade | H 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 Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father A Cook (~0.92 confidence) and father Alva Cook (~0.92 confidence) and mother Mattie Cook (~0.92 confidence) and father L Cooke (~0.92 confidence) and mother Elizabeth Cooke (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
A Cook
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Alva Cook
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Mattie Cook
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
L Cooke
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Cooke
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cook
Daughter · 1930 · age 22 · b. ~1908 · Nebraska
★ You are viewing this record
Sibling
Lewis Cook
Sibling · 1930 · age 17
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
1930 US Federal Census — Lancaster, Nebraska
Open full size
1930 US Federal Census — Lancaster, Nebraska
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1285unit:0604)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Felix Sims | 24 | Head | Laborer | Arkansas |
| 2 | Lizzie M Sims | 24 | Wife-H | — | Arkansas |
| 3 | Magdalene Sims | 2 | Daughter | — | Arkansas |
| 4 | Washington Sims | 20 | Son | — | Arkansas |
| 5 | Thomas W Dooley | 67 | Head | Car Washer | Iowa |
| 6 | Andrew M Dooley | 60 | Brother | Laborer | Iowa |
| 7 | Herbert M Schmidt | 24 | Head | Retail Merchant | Nebraska |
| 8 | Ethel A Schmidt | 26 | Wife-H | Music Teacher | Nebraska |
| 9 | Cyrus W Elrod | 53 | Head | Sales Manager | Illinois |
| 10 | Ada M Elrod | 44 | Wife-H | — | New York |
| 11 | Clyde H Marshall | 34 | Head | Master Mechanic | Iowa |
| 12 | Edith A Marshall | 35 | Wife-H | Saleswoman | Missouri |
| 13 | Clyde H Jr Marshall | 13 | Son | — | Nebraska |
| 14 | Helen L Marshall | 11 | Daughter | — | Nebraska |
| 15 | Ervin L Marshall | 9 | Son | — | Nebraska |
| 16 | Doris M Marshall | 7 | Daughter | — | Nebraska |
| 17 | Tena B Thompson | 47 | Head-H | — | Nebraska |
| 18 | Vaclav Hollich | 26 | Lodger | Repairman | Nebraska |
| 19 | Alva W P Cook | 59 | Head | Electrician | Massachusetts |
| 20 | Mattie K Cook | 49 | Wife-H | Dishwasher | Missouri |
| 21 | Lewis H Cook | 17 | Son | — | Nebraska |
| 22 | Mary H Cook THIS PERSON | 22 | Daughter | — | Nebraska |
| 23 | John Honeger | 36 | Head | Laborer | Nebraska |
| 24 | Goldie Honeger | 26 | Wife-H | Waitress | Kansas |
| 25 | Virgil Miller | 33 | Head | Checker | Kansas |
| 26 | Maggie M Miller | 30 | Wife-H | Saleswoman | Ohio |
| 27 | Mary F Miller | 9 | Daughter | — | Nebraska |
| 28 | Marjorie A Miller | 1 | Daughter | — | Nebraska |
| 29 | Mary Kahl | 19 | Lodger | — | Nebraska |
| 30 | John F Slump | 28 | Head | Servant | Nebraska |
| 31 | Olive L Slump | 27 | Wife-H | Route Foreman | Nebraska |
| 32 | Melba J Slump | 11 | Daughter | — | Nebraska |
| 33 | Marcella A Slump | 8 | Daughter | — | Nebraska |
| 34 | Mary G Malone | 43 | Head-H | Cook | Illinois |
| 35 | Mary H Malone | 22 | Daughter | Saleswoman | Nebraska |
| 36 | Margaret Malone | 18 | Daughter | Saleswoman | Nebraska |
| 37 | Julia Malone | 16 | Daughter | — | Nebraska |
| 38 | Francis J Malone | 14 | Son | — | Nebraska |
| 39 | Joseph M Malone | 11 | Son | — | Nebraska |
| 40 | Martha J Malone | 8 | Daughter | — | Nebraska |
| 41 | Edna L King | 34 | Lodger | Stenographer | Nebraska |
| 42 | Alvin J Russell | 22 | Head | Salesman | Kansas |
| 43 | Mary L Russell | 20 | Wife-H | — | Nebraska |
| 44 | Harvey E Wilson | 42 | Head | Roofer | Kansas |
| 45 | Marie H Wilson | 39 | Wife-H | — | South Dakota |
| 46 | Warren H Wilson | 9 | Son | — | Nebraska |
| 47 | Dorothy M Wilson | 5 | Daughter | — | Nebraska |
| 48 | Coffin W Erie | 38 | Head-H | — | Nebraska |
| 49 | Merle R Allen | 18 | Son | Laborer | Nebraska |
| 50 | W. J. Gleason | 78 | Lodger | — | Canada |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)