JJ
James Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this James Johnson across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents William & Sarah — first a head (b.~1898), then head of a 3-person household.
Age 32
b. ~1898
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Presser |
| Industry | Dress Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Presser |
| Township / Ward | Baltimore City |
| 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 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Johnson | Head | — | 32 | ~1898 |
| James Johnson | Son | — | 5 | ~1925 |
| Mary Johnson | Spouse | — | 28 | ~1902 |
Census Appearances
1910
None, Maryland
Son, age 12
None, Maryland · implied b. ~1898 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| 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
Head, age 22
Baltimore, Maryland · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Chauffeur |
| Industry | Coal Truck |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 32
Baltimore, Maryland · implied b. ~1898 — 3 household members
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Presser |
| Industry | Dress Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| 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 James Johnson across 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage. Identified parents: father William Johnson (~0.92 confidence) and mother Sarah Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnson
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Sarah Johnson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Johnson
Head · 1930 · age 32 · 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
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:0959)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Johnson | 10 | Son | — | Maryland |
| 2 | Lillian Johnson | 8 | Daughter | — | Maryland |
| 3 | James Johnson | 5 | Son | — | Maryland |
| 4 | William Johnson | 3 | Son | — | Maryland |
| 5 | George Holly | 38 | Head | Laborer | Maryland |
| 6 | Lillian Holly | 27 | Wife | — | Maryland |
| 7 | George Jr. Holly | 2 | Son | — | Maryland |
| 8 | Lillian Holly | 25 | Daughter | — | Maryland |
| 9 | Mary Holly | 10 | Daughter | — | Maryland |
| 10 | James Holly | 8 | Son | — | Maryland |
| 11 | William Holly | 5 | Son | — | Maryland |
| 12 | John Holly | 3 | Son | — | Maryland |
| 13 | James Brown | 41 | Head | Laborer | Maryland |
| 14 | Mary Brown | 38 | Wife | — | Virginia |
| 15 | William Robinson | 30 | Head | Laborer | Virginia |
| 16 | Mary Robinson | 28 | Wife | — | Virginia |
| 17 | William Jr. Robinson | 8 | Son | — | Virginia |
| 18 | James Robinson | 3 | Son | — | Virginia |
| 19 | James Johnson THIS PERSON | 32 | Head | Presser | Maryland |
| 20 | Mary Johnson | 28 | Wife | Servant | Maryland |
| 21 | James Jr. Johnson | 5 | Son | — | Maryland |
| 22 | William Johnson | 52 | Head | Servant | Maryland |
| 23 | Mary Johnson | 48 | Wife | — | Maryland |
| 24 | William Jr. Johnson | 21 | Son | Laborer | Maryland |
| 25 | James Johnson | 18 | Son | Laborer | Maryland |
| 26 | Mary Johnson | 15 | Daughter | — | Maryland |
| 27 | Lillian Johnson | 12 | Daughter | — | Maryland |
| 28 | James Parker | 30 | Head | Laborer | Maryland |
| 29 | Mary Parker | 27 | Wife | Servant | Maryland |
| 30 | James Jr. Parker | 3 | Son | — | Maryland |
| 31 | Rufus Berry | 33 | Head | Porter | Virginia |
| 32 | Lillian Berry | 28 | Wife | — | Virginia |
| 33 | Rufus Jr. Berry | 4 | Son | — | Virginia |
| 34 | James Brown | 56 | Head | Laborer | Maryland |
| 35 | Mary Brown | 52 | Wife | Maid | Virginia |
| 36 | Charles Thomas | 57 | Head | Laborer | Maryland |
| 37 | Lillian Thomas | 30 | Wife | — | Virginia |
| 38 | Mary Thomas | 2 | Daughter | Servant | Virginia |
| 39 | James Thomas | 28 | Son | R. R. Porter | Maryland |
| 40 | Lillian Thomas | 22 | Lodger | Cook | Virginia |
| 41 | James Jr. Thomas | 20 | Lodger | Laborer | Virginia |
| 42 | William Thomas | 23 | Head | Auto Mechanic | North Carolina |
| 43 | Mary Thomas | 22 | Wife | — | Maryland |
| 44 | William Jr. Thomas | 1 | Son | — | Maryland |
| 45 | James Thomas | 25 | Head | Worker | South Carolina |
| 46 | Lillian Thomas | 21 | Wife | Servant | Virginia |
| 47 | James Jr. Thomas | 3 | Son | Servant | Maryland |
| 48 | William Thomas | 32 | Head | Chauffeur | Maryland |
| 49 | Mary Thomas | 22 | Wife | Cook | Maryland |
| 50 | James Thomas | 41 | Head | Porter | North Carolina |
Pedigree Summary
James
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)