TC
Thomas Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Thomas Cooper across the 1910, 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 2-person household.
Age 55
b. ~1885
Male
Head
Born: Maryland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Class of Worker | 40 |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1885 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Louiza Cooper | Daughter | — | 3 | ~1937 |
| Thomas Cooper | Head | — | 55 | ~1885 |
Census Appearances
1910
Baltimore, Maryland
Other, age 27
Baltimore, Maryland · implied b. ~1883 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Other, age 36
Baltimore, Maryland · implied b. ~1884 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | Black |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Caulker |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 48
Baltimore, Maryland · implied b. ~1882 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 17 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 55
Baltimore-City-County, Maryland · implied b. ~1885 — 2 household members
| Surname | Cooper |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Class of Worker | 40 |
| Highest Grade | No 6 |
| 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 Thomas Cooper across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Cooper
Head · 1940 · age 55 · b. ~1885 · Maryland
★ You are viewing this record
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-t0627-01509-00274)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martin Minina | 53 | Lodger | Laborer | Poland |
| 42 | Andrew Stotsky | 50 | Head | Farm Hand | Maryland |
| 43 | Anna Stotsky | 39 | Wife | Butcher | Maryland |
| 44 | Irene Stotsky | 17 | Daughter | — | Maryland |
| 45 | Marvin Crouch | 51 | Head | — | North Carolina |
| 46 | Grace Crouch | 33 | Wife | — | Maryland |
| 47 | Grace Crouch | 5 | Daughter | — | Maryland |
| 48 | Margaret Crouch | 4 | Daughter | — | Maryland |
| 49 | Corabell Crouch | 2 | Daughter | — | Maryland |
| 50 | Thomas Cooper THIS PERSON | 55 | Head | — | Maryland |
| 51 | Louiza Cooper | 3 | Daughter | — | Maryland |
| 52 | Victor M. Everhart | 36 | Head | Welder | Maryland |
| 53 | May M. Everhart | 36 | Wife | — | Maryland |
| 54 | Albert Everhart | 13 | Son | — | Maryland |
| 55 | Calvin Everhart | 9 | Son | — | Maryland |
| 56 | Geraldine Everhart | 4 | Daughter | — | Maryland |
| 57 | Patricia Everhart | 1 | Daughter | — | Maryland |
| 58 | Harry Crawford | 34 | Head | Longshoreman | Maryland |
| 59 | Minnie Crawford | 33 | Wife | — | Austria |
| 60 | Pauline Crawford | 8 | Daughter | — | Maryland |
| 61 | Louis Crawford | 6 | Son | — | Maryland |
| 62 | William Ozazewski | 42 | Head | Clothing Spreader | Maryland |
| 63 | Eleanor Ozazewski | 33 | Wife | — | Maryland |
| 64 | William Jr. Ozazewski | 7 | Son | — | Maryland |
| 65 | Marie Ozazewski | 6 | Daughter | — | Maryland |
| 66 | Dolores Ozazewski | 4 | Daughter | — | Maryland |
| 67 | Gloria Ozazewski | 2 | Daughter | — | Maryland |
| 68 | Patricia Ozazewski | 1 | Daughter | — | Maryland |
| 69 | Addie Summler | 38 | Head | — | North Carolina |
| 70 | Plumer Summler | 18 | Son | Laborer | Maryland |
| 71 | Irene Summler | 14 | Daughter | — | Maryland |
| 72 | Addie M. Summler | 12 | Daughter | — | Maryland |
| 73 | Rettie L. Summler | 11 | Daughter | — | Maryland |
| 74 | Hattie Butler | 68 | Head | — | Maryland |
| 75 | Josephine Ball | 33 | Head | Wash Woman | Virginia |
| 76 | Ella M. Ball | 10 | Daughter | — | Maryland |
| 77 | Elizabeth Ball | 8 | Daughter | — | Maryland |
| 78 | Louisa Ball | 3 | Daughter | — | Maryland |
| 79 | Steve Kowalski | 38 | Head | Laborer | Maryland |
| 80 | Edward Kowalski | 25 | Brother | Laborer | 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)