MC
Mary Cook — 1900 US Census Record
Model Tree available1900 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Cook across the 1900, 1910 and 1920 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents Vernon & John — first a daughter (b.~1898), then head of a 3-person household.
Age 2
b. ~1898
Female
Daughter
Born: Maryland
Single
1900 Census Record Details
| Census Year | 1900 |
| Location | Baltimore, Maryland |
| Surname | Cook |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | June |
| Birth Year | 1898 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 1St Precinct 1St Dist |
| Est. Birth Year | ~1898 |
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.
3 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cook | Daughter | — | 2 | ~1898 |
| John Cook | Head | — | 29 | ~1871 |
| Francis Cook | Spouse | — | 26 | ~1874 |
Census Appearances
1900
Baltimore, Maryland
Daughter, age 2
Baltimore, Maryland · implied b. ~1898 — 3 household members
| Surname | Cook |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | June |
| Birth Year | 1898 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Baltimore, Maryland
Daughter, age 10
Baltimore, Maryland · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Marie S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Daughter, age 20
Baltimore, Maryland · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| 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 (1900, 1910 and 1920) in Baltimore, Maryland, using XGBoost record linkage. Identified parents: father Vernon Cook (~0.92 confidence) and father John Cook (~0.92 confidence) and father Marshall Cook (~0.92 confidence) and mother Florence Cook (~0.92 confidence) and mother Francis Cook (~0.92 confidence) and mother Jessie Cook (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Vernon Cook
b. ~1871
Source father
● Household
· direct · ~0.92
Father
John Cook
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Marshall Cook
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Florence Cook
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Francis Cook
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Jessie Cook
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cook
Daughter · 1900 · age 2 · b. ~1898 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Baltimore, Maryland
Open full size
1900 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu606unit:0171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura Fisher | 26 | Wife | — | Maryland |
| 52 | Helena Fisher | 6 | Daughter | — | Maryland |
| 53 | Lillie Fisher | 5 | Daughter | — | Maryland |
| 54 | James A. Fisher | 3 | Son | — | Maryland |
| 55 | Harrott Fisher | 70 | Mother | — | Maryland |
| 56 | Gustavus Lurman | 55 | Head | Banker | Maryland |
| 57 | Elizabeth Lurman | 46 | Wife | — | Maryland |
| 58 | Frances Lurman | 25 | Daughter | — | Maryland |
| 59 | Katharine Lurman | 24 | Daughter | — | Maryland |
| 60 | Elizabeth Dawson | 23 | Waitress | Waitress | Ireland |
| 61 | Mary Bostin | 26 | Maid | Maid | Maryland |
| 62 | Shadr Mellour | 46 | Coachman | Coachman | Maryland |
| 63 | Ellen Foote | 38 | Cook | Cook | Maryland |
| 64 | Joseph O'Brian | 61 | Head | Gardener | Ireland |
| 65 | Eliza O'Brian | 55 | Wife | — | Ireland |
| 66 | Edward O'Brian | 20 | Son | Coachman | Maryland |
| 67 | Agnes O'Brian | 10 | Daughter | At School | Maryland |
| 68 | Henrietta Mellour | 18 | Head | — | Maryland |
| 69 | Royal Mellour | 16 | Son | Day Laborer | Maryland |
| 70 | R. A. Mellour | 13 | Son | At School | Maryland |
| 71 | S. Jr. Mellour | 10 | Son | At School | Maryland |
| 72 | Rachel Mellour | 8 | Daughter | — | Maryland |
| 73 | Minnie Mellour | 7 | Daughter | — | Maryland |
| 74 | Mollie Mellour | 4 | Daughter | — | Maryland |
| 75 | John H. Cook | 29 | Head | Farm Laborer | Maryland |
| 76 | Francis P. Cook | 25 | Wife | — | Maryland |
| 77 | Mary E. Cook THIS PERSON | 2 | Daughter | — | Maryland |
| 78 | William Mclane | 32 | Head | — | Maryland |
| 79 | Elinor Mclane | 8 | Daughter | — | Maryland |
| 80 | Allan Mclane | 5 | Son | — | Maryland |
| 81 | James L. Mclane | 2 | Son | — | Maryland |
| 82 | Mary French | 25 | Maid | Maid | Maryland |
| 83 | Lilly Lamm | 18 | Maid | Maid | Maryland |
| 84 | Rachel Carter | 38 | Waiter | Waiter | Maryland |
| 85 | Jesse Clark | 50 | Coachman | 2Nd Man | Maryland |
| 86 | Edward Ross | 42 | Coachman | Coachman | Maryland |
| 87 | Bob Williams | 38 | Head | Gardener | Virginia |
| 88 | Annie B. Williams | 26 | Wife | — | W. Virginia |
| 89 | Cora B. Williams | 5 | Daughter | — | Maryland |
| 90 | Helen Williams | 3 | Daughter | — | Maryland |
| 91 | Rob L. Williams | 0 | Son | — | Maryland |
| 92 | Alex Prince | 45 | Head | Gardener | Maryland |
| 93 | Addie Prince | 42 | Wife | Laundress | Maryland |
| 94 | George T. Prince | 20 | Son | Farm Laborer | Maryland |
| 95 | Girty T. Prince | 26 | Daughter | Asst. Laundress | Maryland |
| 96 | Mary Thomas | 77 | Mother | — | Maryland |
| 97 | Hester Prince | 16 | Sister | At School | Maryland |
| 98 | Henry Jones | 30 | Head | Coachman | Maryland |
| 99 | Rosa Jones | 27 | Wife | — | Maryland |
| 100 | John Scott | 45 | Head | Farm Laborer | Virginia |
Pedigree Summary
Mary
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)