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James Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this James Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Mary & James — first a son (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | salesman |
| Industry | life insurance |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 748 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Salesman |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1911 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Henderson | Daughter | — | 35 | ~1905 |
| Nellie Johnson | Head | — | 58 | ~1882 |
| Betty Henderson | Other | — | 9 | ~1931 |
| Illean Henderson | Other | — | 5 | ~1935 |
| William Henderson | Other | — | 36 | ~1904 |
| Janet Henderson | Other | — | 7 | ~1933 |
| James Johnson | Son | — | 29 | ~1911 |
Census Appearances
1920
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 18
Baltimore, Maryland · implied b. ~1912 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Servant |
| Industry | Priv. Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 29
Baltimore-City-County, Maryland · implied b. ~1911 — 7 household members
| Surname | Johnson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | salesman |
| Industry | life insurance |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 748 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Ferruccio (~0.92 confidence) and father James Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence) and mother Ida Johnson (~0.92 confidence) and mother Nellie Johnson (~0.92 confidence) and mother Elizabeth Mekins (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Ferruccio
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
James Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Ida Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Nellie Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Mekins
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Johnson
Son · 1940 · age 29 · b. ~1911 · Maryland
★ You are viewing this record
Sibling
Mary Henderson
Sibling · 1940 · age 35
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01532-00424)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Ronan | 52 | Brother-in-law | Laborer | Pennsylvania |
| 42 | Agnes Ronan | 52 | Sister-in-law | — | Pennsylvania |
| 43 | Pauline Durham | 50 | Head | — | Maryland |
| 44 | Audrey Durham | 27 | Daughter | Saleswoman | Maryland |
| 45 | Kenneth Durham | 23 | Son | Tipper | Maryland |
| 46 | Henrietta Durham | 24 | Daughter-in-law | — | Maryland |
| 47 | Kenneth Jr. Durham | 4 | Grandson | — | Maryland |
| 48 | Margaret Werner | 64 | Head | — | Maryland |
| 49 | William Alricht | 37 | Son | — | Maryland |
| 50 | Joseph Tolson | 53 | Head | Painter | Maryland |
| 51 | Catherine Tolson | 47 | Wife | — | Maryland |
| 52 | Charles L. Cramer | 44 | Head | Car Washer | Maryland |
| 53 | Amelia E. Cramer | 34 | Wife | Sewing | Maryland |
| 54 | Annie A. Cramer | 11 | Daughter | — | Maryland |
| 55 | John Lerch | 42 | Head | Welder | Maryland |
| 56 | Stella Lerch | 38 | Wife | — | Pennsylvania |
| 57 | Leroy Lerch | 21 | Son | Treasurer | Maryland |
| 58 | Rebecca Carney | 82 | Mother-in-law | — | Pennsylvania |
| 59 | Nellie Johnson | 58 | Head | — | Irish Free State |
| 60 | James Johnson THIS PERSON | 29 | Son | Salesman | Maryland |
| 61 | William Henderson | 36 | Son-in-law | Truck Driver | Maryland |
| 62 | Mary Henderson | 35 | Daughter | — | California |
| 63 | Betty Henderson | 9 | Granddaughter | — | Maryland |
| 64 | Janet Henderson | 7 | Granddaughter | — | Maryland |
| 65 | Illean Henderson | 5 | Granddaughter | — | Maryland |
| 66 | Harry G. Watts | 52 | Head | Bartender | Maryland |
| 67 | Pauline Watts | 43 | Wife | — | Maryland |
| 68 | Florence Brenner | 26 | Lodger | Laundress | Maryland |
| 69 | Charles Richter | 26 | Head | Press Feeder | Maryland |
| 70 | Margaret Richter | 26 | Wife | — | New York |
| 71 | Charles Richter | 1 | Son | — | Maryland |
| 72 | Bernard Hagan | 42 | Head | Production Manager | Maryland |
| 73 | Carolina K. Hagan | 41 | Wife | — | Maryland |
| 74 | Deloris Hagan | 10 | Daughter | — | Maryland |
| 75 | Bernard Jr. Hagan | 19 | Son | — | Maryland |
| 76 | Elmer Hurley | 38 | Head | Moulder | Maryland |
| 77 | Sarah Hurley | 45 | Wife | — | Maryland |
| 78 | Dorothy Hurley | 16 | Daughter | — | Maryland |
| 79 | Samuel Atchley | 44 | Head | Supervisor | Tennessee |
| 80 | Ada Atchley | 40 | Wife | — | Maryland |
Pedigree Summary
James + 1 sibling
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)