BJ
Bertha Johnson — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Bertha Johnson across the 1900, 1910 and 1920 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 7-person household.
Age 23
b. ~1877
Female
Spouse
Born: Maryland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Baltimore, Maryland |
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Birth Month | Oct |
| Birth Year | 1877 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1877 |
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.
7 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Carrie Johnson | Daughter | — | 5 | ~1895 |
| Edna Johnson | Daughter | — | 3 | ~1897 |
| Nelson Johnson | Head | — | 37 | ~1863 |
| Frank Pinder | Other | — | 16 | ~1884 |
| Nelson Johnson | Son | — | 2 | ~1898 |
| Samuel Johnson | Son | — | 1 | ~1899 |
| Bertha Johnson | Spouse | — | 23 | ~1877 |
Census Appearances
1900
Baltimore, Maryland
Spouse, age 23
Baltimore, Maryland · implied b. ~1877 — 7 household members
| Surname | Johnson |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Birth Month | Oct |
| Birth Year | 1877 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Baltimore, Maryland
Spouse, age 29
Baltimore, Maryland · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Bertie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Maryland |
| Years Married | 2 |
| Children Born | 2 |
| Children Living | 2 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Spouse, age 38
Baltimore, Maryland · implied b. ~1882 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Bertie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Mulatto |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundry |
| Industry | Out |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Bertha Johnson across 3 US Census years (1900, 1910 and 1920) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Johnson
Spouse · 1900 · age 23 · b. ~1877 · 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:1900:12thcensusofpopu616unit:0826)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Lottie E. Warfield | 18 | Daughter | — | Maryland |
| 52 | Louis N. Warfield | 12 | Son | — | Maryland |
| 53 | John Hermansdorfer | 57 | Head | Wagon Driver | Germany |
| 54 | Barbara Hermansdorfer | 54 | Wife | — | Germany |
| 55 | Gottlieb Hermansdorfer | 29 | Son | Clerk | Maryland |
| 56 | Francis Hermansdorfer | 25 | Son | — | Maryland |
| 57 | Michael Hermansdorfer | 17 | Son | Candy Maker | Maryland |
| 58 | Mollie Hermansdorfer | 16 | Daughter | — | Maryland |
| 59 | Carlos P. Sales | 45 | Head | Scale Maker | Spain |
| 60 | Elmira A. Sales | 44 | Wife | — | Maryland |
| 61 | Lily M. Sales | 25 | Daughter | — | Maryland |
| 62 | Albert Falk | 41 | Head | P. O. Moulder | Maryland |
| 63 | Katie Falk | 28 | Wife | — | Maryland |
| 64 | John Falk | 9 | Son | At School | Maryland |
| 65 | William Richardson | 64 | Head | Day Laborer | Virginia |
| 66 | Alverta Richardson | 61 | Wife | — | Maryland |
| 67 | Harry E. Richardson | 28 | Son | — | Maryland |
| 68 | Isaac F. Richardson | 23 | Son | Day Laborer | Maryland |
| 69 | William Green | 50 | Head | Driver | Maryland |
| 70 | Maria Green | 45 | Wife | — | Maryland |
| 71 | Elma A. Green | 21 | Daughter | — | Maryland |
| 72 | William Green | 10 | Son | — | Maryland |
| 73 | William E. Green | 67 | Boarder | — | Maryland |
| 74 | Nelson Johnson | 36 | Head | Driver | Maryland |
| 75 | Bertha Johnson THIS PERSON | 22 | Wife | — | Maryland |
| 76 | Carrie E. Johnson | 5 | Daughter | — | Maryland |
| 77 | Edna Johnson | 2 | Daughter | — | Maryland |
| 78 | Nelson Jr. Johnson | 1 | Son | — | Maryland |
| 79 | Samuel G. Johnson | None | Son | — | Maryland |
| 80 | Frank Pinder | 15 | Boarder | Plasterer | Maryland |
| 81 | Fredk Kleinhenn | 47 | Head | Baker | Germany |
| 82 | Elizabeth Kleinhenn | 39 | Wife | — | Maryland |
| 83 | William Kleinhenn | 19 | Son | Box Maker | Maryland |
| 84 | Harry Kleinhenn | 17 | Son | Blacksmith | Maryland |
| 85 | Blanche Kleinhenn | 12 | Daughter | At School | Maryland |
| 86 | John Clarke | 78 | Boarder | — | Pennsylvania |
| 87 | Dennis Oneill | 58 | Head | Huckster | Ireland |
| 88 | Annie Oneill | 58 | Wife | — | Maryland |
| 89 | Martin Oneill | 25 | Son | Physician | New York |
| 90 | John Oneill | 22 | Son | — | New York |
| 91 | Mary Oneill | 19 | Daughter | Milliner | New York |
| 92 | Peter Bell | 54 | Head | Produce Dealer | Germany |
| 93 | Sophia Bell | 22 | Wife | — | Maryland |
| 94 | Frederick H. Bell | 1 | Son | — | Maryland |
| 95 | Rebecca Bailey | 25 | Boarder | Tailoress | Maryland |
| 96 | Charles F. Hook | 28 | Head | Box Maker | Maryland |
| 97 | Mary Hook | 27 | Wife | — | Maryland |
| 98 | Charles S. Hook | 9 | Son | At School | Maryland |
| 99 | Helen Hook | 7 | Daughter | At School | Maryland |
| 100 | Albert Hook | 5 | Son | — | Maryland |
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)