LC
Lillian Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Lillian Cook across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Cook |
| Given Name | Lillian |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1910 |
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 Lillian | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cook | Daughter | — | 5 | ~1935 |
| William Cook | Son | — | 2 | ~1938 |
| Frederick Cook | Son | — | 7 | ~1933 |
| Jean Cook | Daughter | — | 3 | ~1937 |
| Frederick Cook | Head | — | 30 | ~1910 |
| Lillian Cook | Spouse | — | 30 | ~1910 |
| Lawrence Cook | Son | — | ~1940 |
Census Appearances
1930
Baltimore, Maryland
Spouse, age 22
Baltimore, Maryland · implied b. ~1908 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Lillian |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 18 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 30
Baltimore-City-County, Maryland · implied b. ~1910 — 7 household members
| Surname | Cook |
| Given Name | Lillian |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Lillian Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lillian Cook
Spouse · 1940 · age 30 · b. ~1910 · Maryland
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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-t0627-01508-00481)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Cook | 18 | Daughter | Machine Operator | Maryland |
| 42 | Bernard Cook | 17 | Son | Laborer | Maryland |
| 43 | Rita Cook | 15 | Daughter | — | Maryland |
| 44 | Josephine Cook | 13 | Daughter | — | Maryland |
| 45 | Clara Cook | 11 | Daughter | — | Maryland |
| 46 | John Jos. Cook | 8 | Son | — | Maryland |
| 47 | Teresa Cook | 7 | Daughter | — | Maryland |
| 48 | Joseph Cook | 6 | Son | — | Maryland |
| 49 | Myles Mcdonough | 50 | Head | Janitor (Sister) | Maryland |
| 50 | Sister Sebastian | 26 | Partner | Teacher (Sister) | Pennsylvania |
| 51 | Melanie Pocinski | 39 | Head | Machine Operator | Poland |
| 52 | Francis Pocinski | 12 | Daughter | — | Maryland |
| 53 | Richard Pocinski | 10 | Son | — | Maryland |
| 54 | James Brosh | 42 | Head | Salesman | Maryland |
| 55 | Tillis Brosh | 35 | Wife | Helper | Maryland |
| 56 | Monica Brosh | 2 | Daughter | — | Maryland |
| 57 | Edward J. Brosh | 32 | Lodger | Mechanic | Maryland |
| 58 | Charles Hodges | 32 | Head | Insulator | Maryland |
| 59 | Madeline Hodges | 31 | Wife | — | Maryland |
| 60 | Elizabeth Hodges | 11 | Daughter | — | Maryland |
| 61 | Clara Hodges | 9 | Daughter | — | Maryland |
| 62 | Roberta Hodges | 7 | Daughter | — | Maryland |
| 63 | Rosalie Hodges | 3 | Daughter | — | Maryland |
| 64 | Geraldine Hodges | 1 | Daughter | — | Maryland |
| 65 | Frederick Cook | 30 | Head | Chauffeur | Maryland |
| 66 | Lillian Cook THIS PERSON | 30 | Wife | — | Maryland |
| 67 | Frederick Cook | 7 | Son | — | Maryland |
| 68 | Margaret Cook | 5 | Daughter | — | Maryland |
| 69 | Jean Cook | 3 | Daughter | — | Maryland |
| 70 | William Cook | 2 | Son | — | Maryland |
| 71 | Lawrence Cook | 0 | Son | — | Maryland |
| 72 | Lillian Holmes | 34 | Head | Machine Operator | Maryland |
| 73 | Dolores Gorsuch | 14 | Daughter | — | Maryland |
| 74 | Edward Hass | 30 | Head | Floor Man | Maryland |
| 75 | Beatrice Hass | 21 | Wife | — | Maryland |
| 76 | Edward Hass | 2 | Son | — | Maryland |
| 77 | Elsie Ruggieri | 36 | Head | — | Maryland |
| 78 | Vernon Ruggieri | 17 | Son | Truck Help | Maryland |
| 79 | Flora Ruggieri | 9 | Daughter | — | Maryland |
| 80 | Donald Ruggieri | 8 | Son | — | 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)