JC
John Cook — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Cook across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 11-person household.
Age 48
b. ~1882
Male
Head
Born: Virginia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Cook |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 21 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Occupation | Laborer |
| Industry | Dock |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2,450 |
| Radio Set | R |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1882 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Laura Cook | Daughter | — | 5 | ~1925 |
| Etta Cook | Daughter | — | 12 | ~1918 |
| Nathaniel Cook | Daughter | — | 10 | ~1920 |
| Lida Cook | Daughter | — | 9 | ~1921 |
| John Cook | Head | — | 48 | ~1882 |
| Donald Cook | Son | — | 6 | ~1924 |
| Nathaniel Cook | Son | — | 19 | ~1911 |
| Erasmus Cook | Son | — | 15 | ~1915 |
| Eugene Cook | Son | — | 13 | ~1917 |
| Stephen Cook | Son | — | 17 | ~1913 |
| Laura Cook | Spouse | — | 45 | ~1885 |
Census Appearances
1920
None, Maryland
Head, age 39
None, Maryland · implied b. ~1881 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Baltimore, Maryland
Head, age 48
Baltimore, Maryland · implied b. ~1882 — 11 household members
| Surname | Cook |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 21 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Laborer |
| Industry | Dock |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2,450 |
| Radio Set | R |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Baltimore-City-County, Maryland
Head, age 58
Baltimore-City-County, Maryland · implied b. ~1882 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooke |
| Given Name | John S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Stevedore |
| Industry | Water front |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 200 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 John Cook across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Cook
Head · 1930 · age 48 · b. ~1882 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus862unit:0901)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Augustus Roberts | 50 | Head | Carpenter | Arkansas |
| 2 | Rosie Roberts | 47 | Wife | — | Texas |
| 3 | Herman Roberts | 20 | Son | Janitor | Texas |
| 4 | Anna May Roberts | 17 | Daughter | — | Texas |
| 5 | Mathew Roberts | 15 | Son | — | Texas |
| 6 | Margaret Roberts | 13 | Daughter | — | Texas |
| 7 | Mary Ann Grace Roberts | 8 | Daughter | — | Texas |
| 8 | Charles Roberts | 10 | Son | — | Texas |
| 9 | Dorothy Roberts | 5 | Daughter | — | Maryland |
| 10 | Hayward Holder | 8 | Adopted Son | — | Texas |
| 11 | Harley Sweeney | 24 | Head | Bell Boy | Texas |
| 12 | Willie Sweeney | 23 | Wife | — | Texas |
| 13 | Rufus Jr. Sweeney | 3 | Son | — | Maryland |
| 14 | Rose M. Sweeney | 0 | Daughter | — | Maryland |
| 15 | Andrew Tucker | 28 | Head | Stone Mason | North Carolina |
| 16 | Mary Tucker | 20 | Wife | — | North Carolina |
| 17 | Louis Mills | 34 | Lodger | Molder | North Carolina |
| 18 | Lena Mills | 26 | Lodger | — | North Carolina |
| 19 | Elbert Mills | 4 | Lodger | — | Maryland |
| 20 | John S. Cook THIS PERSON | 48 | Head | Laborer | Virginia |
| 21 | Laura P. Cook | 45 | Wife | — | Virginia |
| 22 | Nathaniel Cook | 19 | Son | — | Virginia |
| 23 | Stephen S. Cook | 17 | Son | — | Virginia |
| 24 | Erasmus L. Cook | 15 | Son | — | Maryland |
| 25 | Eugene H. Cook | 13 | Son | — | Maryland |
| 26 | Etta B. Cook | 12 | Daughter | — | Maryland |
| 27 | Nathaniel Cook | 10 | Daughter | — | Maryland |
| 28 | Lida E. Cook | 9 | Daughter | — | Maryland |
| 29 | Donald G. Cook | 6 | Son | — | Maryland |
| 30 | Laura G. Cook | 5 | Daughter | — | Maryland |
| 31 | Edgar Daddisfield | 37 | Head | Laborer | Maryland |
| 32 | Naomi Daddisfield | 27 | Wife | — | Maryland |
| 33 | Francis Daddisfield | 2 | Son | — | Maryland |
| 34 | Richmond Webb | 25 | Lodger | Yard Laborer | North Carolina |
| 35 | Frank Wilson | 43 | Head | Laborer | Maryland |
| 36 | Eleonora Wilson | 27 | Wife | — | Maryland |
| 37 | Mary Wilson | 10 | Daughter | — | Maryland |
| 38 | Francis Gordon | 32 | Head | Paperhanger | Maryland |
| 39 | Mildred Gordon | 30 | Wife | — | Maryland |
| 40 | Lorraine Gordon | 5 | Daughter | — | Maryland |
| 41 | Alice Gordon | 3 | Daughter | — | Maryland |
| 42 | Randolph Gordon | 1 | Son | — | Maryland |
| 43 | James O. Meade | 24 | Head | Laborer | Maryland |
| 44 | Vivian Meade | 25 | Wife | — | Maryland |
| 45 | William E. Meade | 8 | Son | — | Maryland |
| 46 | James L. Meade | 4 | Son | — | Maryland |
| 47 | Geraldine Meade | 3 | Daughter | — | Maryland |
| 48 | James A. Washington | 43 | Head | Porter | Maryland |
| 49 | Mary J. Washington | 40 | Wife | Cook | Virginia |
| 50 | Ethel A. Washington | 21 | Daughter | Teacher | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)