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John Clarke — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Clarke across the 1900 and 1910 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a son (b.~1890), then head of a 7-person household.
Age 10
b. ~1890
Male
Son
Born: Maryland
Single
1900 Census Record Details
| Census Year | 1900 |
| Location | Baltimore, Maryland |
| Surname | Clarke |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | June |
| Birth Year | 1890 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | at School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | At School |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1890 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Margareth Clarke | Daughter | — | 6 | ~1894 |
| John Clarke | Son | — | 10 | ~1890 |
| Albert Clarke | Son | — | 4 | ~1896 |
| James Clarke | Head | — | 41 | ~1859 |
| Margareth Clarke | Spouse | — | 35 | ~1865 |
| James Clarke | Son | — | 8 | ~1892 |
| Vincent Clarke | Son | — | 3 | ~1897 |
Census Appearances
1900
Baltimore, Maryland
Son, age 10
Baltimore, Maryland · implied b. ~1890 — 7 household members
| Surname | Clarke |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | June |
| Birth Year | 1890 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | at School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1910
Baltimore, Maryland
Son, age 19
Baltimore, Maryland · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Oiler |
| Industry | Boat |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| 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 John Clarke across 2 US Census years (1900 and 1910) in Baltimore, Maryland, using XGBoost record linkage.
Show:
This person
Anchor record
John Clarke
Son · 1900 · age 10 · b. ~1890 · Maryland
★ You are viewing this record
Sibling
Margareth Clarke
Sibling · 1900 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Clarke
Sibling · 1900 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Clarke
Sibling · 1900 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Clarke
Sibling · 1900 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
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:1900:12thcensusofpopu609unit:0272)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jenie Corean | 36 | Sister in law | Laundry | Maryland |
| 2 | Nellie Corean | 34 | Sister in law | Laundress | Maryland |
| 3 | John F. Langen | 39 | Head | Fireman | Maryland |
| 4 | Ella Langen | 35 | Wife | — | Maryland |
| 5 | John Langen | 9 | Son | At School | Maryland |
| 6 | Margareth Langen | 5 | Daughter | — | Maryland |
| 7 | Thomas H. Langen | 3 | Son | — | Maryland |
| 8 | Edward Langen | 2 | Son | — | Maryland |
| 9 | George F. Beisline | 39 | Head | Day Laborer | Maryland |
| 10 | Marry E. Beisline | 38 | Wife | — | Maryland |
| 11 | Annie Beisline | 7 | Daughter | At School | Maryland |
| 12 | Joseph Beisline | 3 | Son | — | Maryland |
| 13 | George Beisline | 1 | Son | — | Maryland |
| 14 | James Clarke | 41 | Head | Day Laborer | Maryland |
| 15 | Margareth Clarke | 34 | Wife | — | Maryland |
| 16 | John J. Clarke THIS PERSON | 10 | Son | At School | Maryland |
| 17 | James B. Clarke | 8 | Son | At School | Maryland |
| 18 | Margareth Clarke | 5 | Daughter | At School | Maryland |
| 19 | Albert Clarke | 3 | Son | — | Maryland |
| 20 | Vincent Clarke | 2 | Son | — | Maryland |
| 21 | Chas Kurgmiller | 24 | Head | Machinist | Germany |
| 22 | Tinie Kurgmiller | 22 | Wife | — | Germany |
| 23 | John Kurgmiller | 2 | Son | — | Maryland |
| 24 | Charles Kurgmiller | None | Son | — | Maryland |
| 25 | Ellias Kreiner | 57 | Head | Day Laborer | Germany |
| 26 | Marry Kreiner | 57 | Wife | — | Germany |
| 27 | William Kreiner | 27 | Son | Cabinetmaker | Germany |
| 28 | Lewis Kreiner | 21 | Son | Tailor | Germany |
| 29 | Paul Kreiner | 18 | Son | Tailor | Germany |
| 30 | Tressa Kreiner | 19 | Daughter | Day Laborer | Germany |
| 31 | Carry Kreiner | 15 | Daughter | Cigarmaker | Germany |
| 32 | Joseph Otto | 26 | Head | Tailor | Germany |
| 33 | Marry Otto | 30 | Wife | — | Germany |
| 34 | Joseph Otto | 5 | Son | — | Maryland |
| 35 | William Otto | 3 | Son | — | Maryland |
| 36 | Georgia Otto | 1 | Son | — | Maryland |
| 37 | Marry A. Habnicht | 41 | Head | Laundry | Maryland |
| 38 | Walter Habnicht | 20 | Son | Day Laborer | Maryland |
| 39 | Tresse E. Habnicht | 15 | Daughter | Shirt Maker | Maryland |
| 40 | Edward J. Habnicht | 9 | Son | At School | Maryland |
| 41 | Edward Galagher | 38 | Head | Clerk | Maryland |
| 42 | Cillie Galagher | 30 | Wife | — | Maryland |
| 43 | Katie Langen | 78 | Mother in law | — | Ireland |
| 44 | Katie Langen | 38 | Sister in law | Tailor | Maryland |
| 45 | Nellie Langen | 34 | Sister in law | Tailor | Maryland |
| 46 | Bridget Mcgarry | 65 | Head | — | Ireland |
| 47 | John Mcgarry | 37 | Son | Clerk | Maryland |
| 48 | Colman Mcgarry | 34 | Son | Engineer | Maryland |
| 49 | Mickel Mcgarry | 31 | Son | Police | Maryland |
| 50 | Thomas Mcgarry | 28 | Son | Driver | 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)