MC
Martha Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lorain-County, Ohio
Our Model Tree links this Martha Cook across the 1930 and 1940 US Censuses in Lorain-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lorain-County, Ohio |
| Surname | Cook |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Elyria |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Elyria |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Cook | Daughter | — | 11 | ~1929 |
| Raymond Cook | Head | — | 39 | ~1901 |
| Ivy Cook | Spouse | — | 39 | ~1901 |
| Dorothy Cook | Daughter | — | 16 | ~1924 |
| Donald Cook | Son | — | 16 | ~1924 |
| Doris Cook | Daughter | — | 8 | ~1932 |
| Richard Cook | Son | — | 13 | ~1927 |
Census Appearances
1930
Lorain, Ohio
Daughter, age 1
Lorain, Ohio · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Martha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lorain-County, Ohio
Daughter, age 11
Lorain-County, Ohio · implied b. ~1929 — 7 household members
| Surname | Cook |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Elyria |
| Highest Grade | No 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Martha Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Cook
Daughter · 1940 · age 11 · b. ~1929 · Ohio
★ You are viewing this record
Sibling
Donald Cook
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Cook
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Cook
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Cook
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 — Lorain-County, Ohio
Open full size
1940 US Federal Census — Lorain-County, Ohio
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-03103-00530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rosina Gould | 43 | Head | Housework | Florida |
| 2 | Thomas Russell | 26 | Head | Laborer | Tennessee |
| 3 | Nellie Belle Russell | 21 | Wife | — | Tennessee |
| 4 | Thomas Jr. Russell | 2 | Son | — | Ohio |
| 5 | Patricia Russell | 0 | Daughter | — | Ohio |
| 9 | Helen Proctor | 35 | Head | Housework | Pennsylvania |
| 10 | Elizabeth Miller | 76 | Mother | — | Kentucky |
| 11 | Raymond Cook | 39 | Head | — | Ohio |
| 12 | Ivy Cook | 39 | Wife | — | Ohio |
| 13 | Dorothy Cook | 16 | Daughter | — | Ohio |
| 14 | Donald Cook | 16 | Son | — | Ohio |
| 15 | Richard Cook | 13 | Son | — | Ohio |
| 16 | Martha Cook THIS PERSON | 11 | Daughter | — | Ohio |
| 17 | Doris Cook | 8 | Daughter | — | Ohio |
| 18 | Cecil Pratt | 35 | Head | Laborer | Ohio |
| 19 | Mary Pratt | 27 | Wife | — | Hungary |
| 20 | Barbara Pratt | 4 | Daughter | — | Ohio |
| 21 | Walter Warguleniez | 26 | Head | Laborer | New Jersey |
| 22 | Rose Warguleniez | 62 | Mother | — | Poland |
| 23 | Alex Warguleniez | 20 | Brother | Moulder | New Jersey |
| 24 | Stanley Warguleniez | 24 | Brother | Core Maker | New Jersey |
| 25 | Agnes Warguleniez | 30 | Sister | — | Ohio |
| 26 | Stanley Jr. Warguleniez | 0 | Nephew | — | Ohio |
| 27 | John Metera | 46 | Head | Laborer | Poland |
| 28 | Veronica Metera | 42 | Wife | — | Poland |
| 29 | John Metera | 21 | Son | Laborer | New Jersey |
| 30 | Henry Metera | 18 | Son | New | Ohio |
| 31 | Frances Metera | 16 | Daughter | Housework | Ohio |
| 32 | Frank Metera | 13 | Son | — | Ohio |
| 33 | John Kasubienski | 67 | Head | — | Poland |
| 34 | Pauline Kasubienski | 59 | Wife | — | Poland |
| 35 | Alex Kasubienski | 25 | Son | Golf Course | Ohio |
| 36 | Zygmund Kasubienski | 21 | Son | Caddy | Ohio |
| 37 | Anthony Szewczyk | 33 | Head | Truck Driver | Ohio |
| 38 | Stella Szewczyk | 33 | Wife | — | Ohio |
| 39 | Lawrence Szewczyk | 8 | Son | — | Ohio |
| 40 | Anthony Szewczyk | 6 | Son | — | Ohio |
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)