MC
Mary Cook — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Cook across the 1900, 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 2-person household.
Age 68
b. ~1862
Female
Head
Born: Maryland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1862 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cook | Head | — | 68 | ~1862 |
| George Cook | Son | — | 46 | ~1884 |
Census Appearances
1900
Baltimore, Maryland
Head, age 43
Baltimore, Maryland · implied b. ~1857 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 43 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Birth Month | Jan |
| Birth Year | 1857 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Baltimore, Maryland
Head, age 51
Baltimore, Maryland · implied b. ~1859
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Cook |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Children Born | 2 |
| Children Living | 2 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | Patrons |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Head, age 59
Baltimore, Maryland · implied b. ~1861 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 68
Baltimore, Maryland · implied b. ~1862 — 2 household members
| Surname | Cook |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Veteran | No |
| 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 4 US Census years (1900, 1910, 1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cook
Head · 1930 · age 68 · b. ~1862 · 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:1930:15thcensus863unit:1071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman J Freiburger | 43 | Head | Machinist | Maryland |
| 2 | Margaret Freiburger | 34 | Wife | — | Maryland |
| 3 | Herman J Jr Freiburger | 14 | Son | — | Maryland |
| 4 | Margaret Freiburger | 10 | Daughter | — | Maryland |
| 5 | Bernard Freiburger | 8 | Son | — | Maryland |
| 6 | Mildred Freiburger | 6 | Son | — | Maryland |
| 7 | Ruth E Freiburger | 4 | Daughter | — | Maryland |
| 8 | Mary Cook THIS PERSON | 68 | Head | — | Maryland |
| 9 | George Cook | 46 | Son | — | Maryland |
| 10 | Jeanette Russell | 73 | Head | — | Maryland |
| 11 | Mary Russell | 45 | Daughter | — | Maryland |
| 12 | William P Price | 57 | Head | — | Maryland |
| 13 | Ida Price | 54 | Wife | — | Maryland |
| 14 | William Price | 23 | Son | — | Maryland |
| 15 | Lula Corbett | 29 | Daughter | — | Maryland |
| 16 | Thomas H Busch | 37 | Head | — | Maryland |
| 17 | Ellen M Busch | 34 | Wife | — | Maryland |
| 18 | Bessie E Busch | 15 | Daughter | — | Maryland |
| 19 | Margaret Busch | 13 | Daughter | — | Maryland |
| 20 | Esther Busch | 11 | Daughter | — | Maryland |
| 21 | Mildred Busch | 9 | Daughter | — | Maryland |
| 22 | Thomas Busch | 7 | Son | — | Maryland |
| 23 | Dorothy Busch | 5 | Daughter | — | Maryland |
| 24 | Martha Maxwell | 75 | Head | — | Maryland |
| 25 | Clarence Maxwell | 42 | Son | — | Maryland |
| 26 | John Sturm | 50 | Head | — | Maryland |
| 27 | Margaret Sturm | 45 | Wife | — | Maryland |
| 28 | John Sturm | 14 | Son | — | Maryland |
| 29 | Mildred Sturm | 10 | Daughter | — | Maryland |
| 30 | Stephen Small | 66 | Head | — | Maryland |
| 31 | Mary Small | 63 | Wife | — | Maryland |
| 32 | John Schamburg | 73 | Boarder | — | Maryland |
| 33 | Walter S Smith | 29 | Head | — | Maryland |
| 34 | Mabel Smith | 27 | Wife | — | Maryland |
| 35 | Edward Hoole | 36 | Head | — | Maryland |
| 36 | Irene Hoole | 30 | Wife | — | Maryland |
| 37 | Edward Hoole | 7 | Son | — | Maryland |
| 38 | Irene Hoole | 5 | Daughter | — | Maryland |
| 39 | Robert Hoole | 3 | Son | — | Maryland |
| 40 | James Hoole | 1 | Son | — | Maryland |
| 41 | Joseph H Hanna | 51 | Head | — | Maryland |
| 42 | Sarah Hanna | 46 | Wife | — | Maryland |
| 43 | Joseph Hanna | 20 | Son | — | Maryland |
| 44 | Robert Hanna | 12 | Son | — | Maryland |
| 45 | John L King | 73 | Head | — | Maryland |
| 46 | John L Jr King | 45 | Son | — | Maryland |
| 47 | Mary E King | 40 | Daughter | — | Maryland |
| 48 | William King | 38 | Son | — | Maryland |
| 49 | Charles King | 35 | Son | — | Maryland |
| 50 | Margaret King | 32 | Daughter | — | 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)