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John Blake — 1900 US Census Record
Linked across censuses1900 United States Federal Census · None, Maryland
Our Model Tree links this John Blake across the 1900 and 1910 US Censuses in Maryland (XGBoost, ~Confirmed) — first a son (b.~1884), then head of a 11-person household.
Age 16
b. ~1884
Male
Son
Born: Maryland
Single
1900 Census Record Details
| Census Year | 1900 |
| Location | None, Maryland |
| Surname | Blake |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | Nov |
| Birth Year | 1884 |
| 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 | ~1884 |
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 1900 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eugene Blake | Son | — | 20 | ~1880 |
| Nannie Blake | Daughter | — | 22 | ~1878 |
| Annie Rusk | Daughter | — | 23 | ~1877 |
| Ella Rudolph | Daughter | — | 31 | ~1869 |
| Percy Rudolph | Son | — | 9 | ~1891 |
| John Blake | Son | — | 16 | ~1884 |
| Wm Blake | Son | — | 29 | ~1871 |
| Peter Blake | Head | — | 55 | ~1845 |
| Lydia Blake | Spouse | — | 50 | ~1850 |
| Geo Blake | Son | — | 25 | ~1875 |
| Mamie Blake | Daughter | — | 21 | ~1879 |
Census Appearances
1900
None, Maryland
Son, age 16
None, Maryland · implied b. ~1884 — 11 household members
| Surname | Blake |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Birth Month | Nov |
| Birth Year | 1884 |
| 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 25
Baltimore, Maryland · implied b. ~1885 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Black |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Years Married | 56 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Painter |
| Industry | Church |
| 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 Blake across 2 US Census years (1900 and 1910) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blake
Son · 1900 · age 16 · b. ~1884 · Maryland
★ You are viewing this record
Sibling
Annie Rusk
Sibling · 1900 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Blake
Sibling · 1900 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Percy Rudolph
Sibling · 1900 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wm Blake
Sibling · 1900 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mamie Blake
Sibling · 1900 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Rudolph
Sibling · 1900 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nannie Blake
Sibling · 1900 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geo Blake
Sibling · 1900 · age 25
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 — None, Maryland
Open full size
1900 US Federal Census — None, Maryland
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu613unit:0615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lizzie Harsum | 19 | Boarder | House Work | Virginia |
| 2 | Chas Truitt | 31 | Boarder | Porter | Maryland |
| 3 | Sophia Johnson | 39 | Head | Cook | Maryland |
| 4 | Geo Hudson | 36 | Head | Plasterer | S. Carolina |
| 5 | Annie Hudson | 17 | Wife | — | Maryland |
| 6 | Allice Nolan | 23 | Boarder | House Work | Maryland |
| 7 | Wm Smith | 24 | Head | Driver | Virginia |
| 8 | Henrietta Hatton | 40 | Boarder | Laundress | Maryland |
| 9 | Louisa Wallace | 47 | Head | House Work | Maryland |
| 10 | Stella Wallace | 20 | Daughter | Laundress | Maryland |
| 11 | Chas Tillman | 34 | Head | Laborer | Maryland |
| 12 | Fanny Tillman | 32 | Wife | — | Maryland |
| 13 | Chas Tillman | 2 | Son | — | Maryland |
| 14 | James F. Tillman | 2 | Son | — | Maryland |
| 15 | Fannie Holmes | None | Head | Laundress | Washington |
| 16 | Frank Johnson | 42 | Head | Driver | Maryland |
| 17 | Katie Johnson | 37 | Wife | Laundress | Maryland |
| 18 | Laura Boon | 39 | Boarder | Laundress | Maryland |
| 19 | Jack Buchanan | 40 | Head | Laborer | Maryland |
| 20 | Henrietta Buchanan | 35 | Wife | — | Maryland |
| 21 | Louisa Brooks | 12 | Boarder | At School | Maryland |
| 22 | Thomas Decosta | 44 | Head | Laborer | Maryland |
| 23 | Francis Decosta | 38 | Wife | Laundress | Maryland |
| 24 | Ella Decosta | 20 | Daughter | Cook | Maryland |
| 25 | Thomas Decosta | 18 | Son | Driver | Maryland |
| 26 | Francis Decosta | 17 | Daughter | Cook | Maryland |
| 27 | James Decosta | 15 | Son | Clerk | Maryland |
| 28 | Mable Decosta | 10 | Daughter | At School | Maryland |
| 29 | Gilbert Decosta | 5 | Son | — | Maryland |
| 30 | Jane Decosta | 38 | Mother | Cook | Maryland |
| 31 | Peter Blake | 55 | Head | Laborer | Maryland |
| 32 | Lydia Blake | 50 | Wife | Seamstress | Maryland |
| 33 | Ella Rudolph | 31 | Daughter | Cook | Maryland |
| 34 | Percy Rudolph | 9 | Son | At School | Maryland |
| 35 | Wm Blake | 29 | Son | Coachman | Maryland |
| 36 | Geo Blake | 25 | Son | Waiter | Maryland |
| 37 | Nannie Blake | 22 | Daughter | — | Maryland |
| 38 | Mamie Blake | 21 | Daughter | — | Maryland |
| 39 | Eugene Blake | 20 | Son | Clerk | Maryland |
| 40 | John Blake THIS PERSON | 16 | Son | At School | Maryland |
| 41 | Annie Rusk | 23 | Daughter | House Work | Maryland |
| 42 | Christian Reitz | 75 | Head | Shoe Maker | Germany |
| 43 | Margaret Reitz | 75 | Wife | — | Germany |
| 44 | Chas Reitz | 31 | Son | Paper Hanger | Maryland |
| 45 | Elizabeth Reitz | 34 | Daughter | — | Maryland |
| 46 | Rich Adams | 45 | Head | Laborer | Virginia |
| 47 | Sarah E. Adams | 43 | Wife | Laundress | Virginia |
| 48 | Samuel Adams | 12 | Son | At School | Virginia |
| 49 | John Rice | 34 | Brother | Laborer | Virginia |
| 50 | Chas Fast | 45 | Head | Laborer | 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)