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John Blake — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Blake across the 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 9-person household.
Age 37
b. ~1893
Male
Head
Born: Virginia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Blake |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 24 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22.00 |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Mechanic |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1893 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sylvia Blake | Daughter | — | ~1930 | |
| John Blake | Head | — | 37 | ~1893 |
| Doris Blake | Daughter | — | 5 | ~1925 |
| John Blake | Son | — | 9 | ~1921 |
| Dorotha Blake | Daughter | — | 12 | ~1918 |
| Daisy Blake | Spouse | — | 29 | ~1901 |
| Clifton Blake | Son | — | 3 | ~1927 |
| Raymond Blake | Son | — | 10 | ~1920 |
| Howard Blake | Son | — | 7 | ~1923 |
Census Appearances
1920
Baltimore, Maryland
Other, age 23
Baltimore, Maryland · implied b. ~1897 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | John A |
| Relationship to Head | Son-in-law |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Chauffeur |
| Industry | Plumber |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Baltimore, Maryland
Head, age 37
Baltimore, Maryland · implied b. ~1893 — 9 household members
| Surname | Blake |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 24 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22.00 |
| Veteran | No |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 (1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage.
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This person
Anchor record
John Blake
Head · 1930 · age 37 · b. ~1893 · 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:1930:15thcensus861unit:0097)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Zacharie Parker | 52 | Head | Laborer | North Carolina |
| 52 | Blannie Parker | 46 | Wife | — | North Carolina |
| 53 | Millard Parker | 18 | Son | Laborer | North Carolina |
| 54 | Arthur Parker | 10 | Son | — | North Carolina |
| 55 | William Parker | 9 | Son | — | North Carolina |
| 56 | Willard Parker | 8 | Son | — | North Carolina |
| 57 | Blanche Parker | 5 | Daughter | — | North Carolina |
| 58 | Zacharie Parker | 3 | Son | — | North Carolina |
| 59 | Tillie Parker | 1 | Daughter | — | Maryland |
| 60 | William Parker | 32 | Head | Laborer | North Carolina |
| 61 | Belle Parker | 26 | Wife | — | North Carolina |
| 62 | Samuel H. Crooker | 54 | Head | Laborer | North Carolina |
| 63 | Mary E. Crooker | 58 | Wife | — | Maryland |
| 64 | William C. Belland | 18 | Adopted Son | Laborer | Maryland |
| 65 | Leola Brown | 47 | Roomer | — | Maryland |
| 66 | Edna Brown | 8 | Daughter | — | Maryland |
| 67 | Matthew Brown | 5 | Son | — | Maryland |
| 68 | Charles H. Dishorn | 53 | Head | Laborer | Maryland |
| 69 | Henrietta Dishorn | 82 | Mother | — | Maryland |
| 70 | John Blake THIS PERSON | 37 | Head | Mechanic | Virginia |
| 71 | Daisy Blake | 29 | Wife | — | North Carolina |
| 72 | Dorotha Blake | 12 | Daughter | — | Maryland |
| 73 | Raymond Blake | 10 | Son | — | Maryland |
| 74 | John Blake | 9 | Son | — | Maryland |
| 75 | Howard Blake | 7 | Son | — | Maryland |
| 76 | Doris Blake | 5 | Daughter | — | Maryland |
| 77 | Clifton Blake | 3 | Son | — | Maryland |
| 78 | Sylvia Blake | 0 | Daughter | — | Maryland |
| 79 | Walter Corbin | 39 | Head | Carpenter | Virginia |
| 80 | Florie Corbin | 34 | Wife | — | North Carolina |
| 81 | Joseph Dixon | 52 | Head | Laborer | Maryland |
| 82 | Sallie Dixon | 50 | Sister | — | Maryland |
| 83 | Joseph Dixon | 19 | Head | Bell Boy | Maryland |
| 84 | Ida Dixon | 19 | Wife | — | Maryland |
| 85 | Edward Dixon | 0 | Son | — | Maryland |
| 86 | Robert Jones | 50 | Head | Foreman | Maryland |
| 87 | Catherine Jones | 33 | Wife | — | Maryland |
| 88 | Edward Jones | 12 | Son | — | District Columbia |
| 89 | Glenford Henderson | 19 | Head | Bus Boy | Maryland |
| 90 | Marie Henderson | 18 | Wife | — | Maryland |
| 91 | Lloyd Henderson | 0 | Son | — | Maryland |
| 92 | Eli Moore | 63 | Head | Waiter | Maryland |
| 93 | Emma Moore | 61 | Wife | Domestic | Maryland |
| 94 | Sarah Green | 33 | Niece | Maid | Maryland |
| 95 | Albert Green | 12 | Son | — | Maryland |
| 96 | Thomas Patterson | 49 | Head | Porter | Maryland |
| 97 | Eliza Patterson | 48 | Wife | — | Maryland |
| 98 | Bernice Harrington | 19 | Roomer | Laundress | North Carolina |
| 99 | Walter Harrington | 21 | Roomer | Laborer | Maryland |
| 100 | Bessie Britton | 35 | Roomer | Domestic | Virginia |
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)