MC
Mary Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Cook across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 4-person household.
Age 46
b. ~1894
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Cook |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Maid |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Maid |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1894 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Decater Cook | Head | — | 47 | ~1893 |
| John Burrell | Other | — | 74 | ~1866 |
| Steve Cook | Son | — | 25 | ~1915 |
| Mary Cook | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Philadelphia, Pennsylvania
Other, age 25
Philadelphia, Pennsylvania · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Maid |
| Industry | Private Family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Philadelphia, Pennsylvania
Spouse, age 35
Philadelphia, Pennsylvania · implied b. ~1895 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Housewife |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Philadelphia-County, Pennsylvania
Spouse, age 46
Philadelphia-County, Pennsylvania · implied b. ~1894 — 4 household members
| Surname | Cook |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Maid |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 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 Mary Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cook
Spouse · 1940 · age 46 · b. ~1894 · Pennsylvania
★ 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03718-00020)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Smith | 81 | Sister | — | Pennsylvania |
| 42 | David Mccurdy | 30 | Head | Mail Clerk | South Carolina |
| 43 | Amena Mccurdy | 25 | Wife | — | Maryland |
| 44 | David Jr. Mccurdy | 6 | Son | — | Pennsylvania |
| 45 | Junita Mccurdy | 4 | Daughter | — | Pennsylvania |
| 46 | Gwendolyn Mccurdy | 1 | Daughter | — | Pennsylvania |
| 47 | Samira Terrell | 29 | Lodger | Maid | Virginia |
| 48 | Ethel Ellis | 44 | Lodger | — | Maryland |
| 49 | Nunnie Mercer | 45 | Head | Setter | North Carolina |
| 50 | Ruth Mercer | 43 | Wife | Housework | North Carolina |
| 51 | Robert Cook | 26 | Stepson | Log Finisher | Virginia |
| 52 | Charles King | 32 | Brother-in-law | Cook | Virginia |
| 53 | Clara Harkin | 58 | Head | — | Georgia |
| 54 | Gurrie Smith | 31 | Daughter | Designer | Georgia |
| 55 | George Smith | 17 | Grand Son | New Worker | Pennsylvania |
| 56 | Walter Glover | 40 | Lodger | Assembler | Alabama |
| 57 | Francis Dickson | 34 | Head | — | Maryland |
| 58 | Garden Dickson | 6 | Son | — | Pennsylvania |
| 59 | Raymond Dickson | 5 | Son | — | Pennsylvania |
| 60 | Ray Dickson | 4 | Son | — | Pennsylvania |
| 61 | Robert Dickson | 2 | Son | — | Pennsylvania |
| 62 | Bessie Jackson | 25 | Lodger | — | South Carolina |
| 63 | Viola Jackson | 6 | Lodger's Daughter | — | Maryland |
| 64 | Eugene Jackson | 4 | Lodger's Son | — | Pennsylvania |
| 65 | Richard Jackson | 2 | Lodger's Son | — | Pennsylvania |
| 66 | Mammie Gaston | 48 | Head | Operator | Ohio |
| 67 | Alonzo Hawkins | 40 | Head | Chauffer | Pennsylvania |
| 68 | Elsie Hawkins | 31 | Wife | — | North Carolina |
| 69 | George Bullock | 41 | Head | Night Watchman | North Carolina |
| 70 | Mary Williams | 38 | Lodger | Housework | South Carolina |
| 71 | Dennis Dabney | 28 | Head | — | Virginia |
| 72 | Hattie Dabney | 27 | Wife | — | Virginia |
| 73 | Bernard Williams | 49 | Step-son | Chauffer | Virginia |
| 74 | Alease Williams | 32 | Daughter-in-law | — | Virginia |
| 75 | Francis Williams | 7 | Daughter | — | Pennsylvania |
| 76 | Decater Cook | 47 | Head | — | Virginia |
| 77 | Mary E. Cook THIS PERSON | 46 | Wife | Maid | Maryland |
| 78 | Steve L. Cook | 25 | Son | Salesman | Pennsylvania |
| 79 | John Burrell | 74 | Lodger | — | Virginia |
| 80 | Francis King | 69 | Head | — | Virginia |
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)