EC
Ethel Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Ethel Cook across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Cook |
| Given Name | Ethel V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Clerk |
| Industry | Cloth manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1920 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ethel | Age | Birth yr |
|---|---|---|---|---|
| Charles Cook | Son | — | 23 | ~1917 |
| Dora Cook | Daughter | — | 13 | ~1927 |
| Elva Cook | Daughter | — | 12 | ~1928 |
| Ethel Cook | Daughter | — | 20 | ~1920 |
| Florence Cook | Daughter | — | 17 | ~1923 |
| Donald Cook | Son | — | 24 | ~1916 |
| Raymond Cook | Head | — | 48 | ~1892 |
| Daisy Cook | Spouse | — | 52 | ~1888 |
| Raymond Cook | Son | — | 15 | ~1925 |
| Cora Cook | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 9
Baltimore, Maryland · implied b. ~1921 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Evelyn |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Virginia |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 10 household members
| Surname | Cook |
| Given Name | Ethel V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Clerk |
| Industry | Cloth manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 520 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Ethel Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ethel Cook
Daughter · 1940 · age 20 · b. ~1920 · Maryland
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Sibling
Florence Cook
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Cook
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dora Cook
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cook
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Cook
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cora Cook
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elva Cook
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01521-00563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carrie Henkel | 61 | Sister | — | Maryland |
| 2 | Lawrence N. Miles | 36 | Head | Plasterer | Maryland |
| 3 | Bessie E. Miles | 32 | Wife | — | Maryland |
| 4 | Betty E. Miles | 13 | Daughter | — | Maryland |
| 5 | Albert W. Thompson | 82 | Father in law | — | Maryland |
| 6 | Nannie A. Thompson | 70 | Mother in law | — | Maryland |
| 7 | Willie J. Miller | 40 | Brother in law | Laborer | Maryland |
| 8 | Daniel E. Jr. Hogard | 37 | Head | Mechanic | Georgia |
| 9 | Helen J. Hogard | 21 | Wife | — | Maryland |
| 10 | Daniel E. 3Rd Hogard | 1 | Son | — | Maryland |
| 11 | Howard W. Watkins | 41 | Head | Blacksmith Helper | Maryland |
| 12 | Katie V. Watkins | 42 | Wife | — | Virginia |
| 13 | Harry H. Watkins | 11 | Son | — | Maryland |
| 14 | George N. Watkins | 8 | Son | — | Maryland |
| 15 | Kenneth W. Watkins | 5 | Son | — | Maryland |
| 16 | Frederick B. Delly | 49 | Head | Laboring | Maryland |
| 17 | Annie M. Delly | 47 | Wife | — | Maryland |
| 18 | Darrell J. Delly | 11 | Son | — | Maryland |
| 19 | Raymond T. Cook | 48 | Head | Assistant Foreman | Maryland |
| 20 | Daisy E. Cook | 52 | Wife | — | Maryland |
| 21 | Donald D. Cook | 24 | Son | Taxi Driver | Maryland |
| 22 | Charles D. Cook | 23 | Son | Car Cleaner | Maryland |
| 23 | Ethel V. Cook THIS PERSON | 20 | Daughter | Clerk | Maryland |
| 24 | Florence E. Cook | 17 | Daughter | Hair Dresser | Maryland |
| 25 | Raymond T. Jr. Cook | 15 | Son | — | Maryland |
| 26 | Dora F. Cook | 13 | Daughter | — | Maryland |
| 27 | Elva B. Cook | 12 | Daughter | — | Maryland |
| 28 | Cora F. Cook | 8 | Daughter | — | Maryland |
| 29 | Frederick E. Johnson | 45 | Head | Policeman | Maryland |
| 30 | Gladys P. Johnson | 40 | Wife | — | Maryland |
| 31 | Frederick E. Jr. Johnson | 19 | Son | Labor | Maryland |
| 32 | John A. Johnson | 18 | Son | Baker | Maryland |
| 33 | Robert E. Johnson | 17 | Son | Labor | Maryland |
| 34 | Kenneth W. Johnson | 13 | Son | — | Maryland |
| 35 | Millard T. Johnson | 9 | Son | — | Maryland |
| 36 | — | None | — | — | — |
| 37 | Carrie G. Mccauley | 53 | Head | — | Maryland |
| 38 | Jack E. Mccauley | 18 | Son | New Worker | Maryland |
| 39 | George H. Mccauley | 28 | Son | Twister-Wire | Maryland |
| 40 | Gladys Mccauley | 25 | Daughter in law | — | Maryland |
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)