FJ
Frank Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Frank Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents David & Anna — first a head (b.~1901), then head of a 5-person household.
Age 39
b. ~1901
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | Laborer |
| Industry | Construction Work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1901 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Mattie Johnson | Daughter | — | ~1940 | |
| Frank Johnson | Head | — | 39 | ~1901 |
| Frank Johnson | Son | — | 3 | ~1937 |
| Sherry Johnson | Son | — | 1 | ~1939 |
| Mattie Johnson | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Baltimore, Maryland
Son, age 17
Baltimore, Maryland · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Frank D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 27
Baltimore, Maryland · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 22 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 28 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 39
Baltimore-City-County, Maryland · implied b. ~1901 — 5 household members
| Surname | Johnson |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Occupation | Laborer |
| Industry | Construction Work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | 6 |
| 1935 Residence | Same Place |
| 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 Frank Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Johnson (~0.92 confidence) and mother Anna Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Anna Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Johnson
Head · 1940 · age 39 · b. ~1901 · Maryland
★ You are viewing this record
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-t0627-01514-00287)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Clark | 29 | Head | Laborer | Maryland |
| 42 | Albert Clark | 5 | Son | — | Maryland |
| 43 | Leonard Mckeen | 27 | Head | Laborer | Maryland |
| 44 | Rose Mckeen | 25 | Wife | — | Maryland |
| 45 | Leonard Mckeen | 5 | Son | — | Maryland |
| 46 | Gilbert Mckeen | 5 | Son | — | Maryland |
| 47 | William Mckeen | 1 | Son | — | Maryland |
| 48 | Richard Mckeen | 0 | Son | — | Maryland |
| 49 | Mary Mckeen | 4 | Daughter | — | Maryland |
| 50 | Barbara Mckeen | 3 | Daughter | — | Maryland |
| 51 | Lewis Mckeen | 1 | Son | — | Maryland |
| 52 | Millicent Gunn | 8 | Step Daughter | — | Maryland |
| 53 | Albert Radthe | 27 | Head | Laborer | Maryland |
| 54 | Ivy Radthe | 23 | Wife | — | Maryland |
| 55 | Dolly Radthe | 4 | Daughter | — | Maryland |
| 56 | Albert Radthe | 2 | Son | — | Maryland |
| 57 | Hoppie Simmons | 27 | Head | Laborer | South Carolina |
| 58 | Alene Simmons | 25 | Wife | — | North Carolina |
| 59 | Betty Jean Simmons | 5 | Daughter | — | Virginia |
| 60 | Kyto Fampel | 51 | Head | Grocer | Maryland |
| 61 | Mamie Fampel | 55 | Sister | Grocer | Maryland |
| 62 | Charles Fampel | 58 | Brother | Baker | Maryland |
| 63 | Edna Koehler | 33 | Sister | — | Maryland |
| 64 | William Koehler | 37 | Brother in law | Laborer | Maryland |
| 65 | — | None | — | — | — |
| 66 | Clarence Frogden | 35 | Head | — | Maryland |
| 67 | Marie Frogden | 30 | Wife | Laborer | Virginia |
| 68 | Beatrice Frogden | 9 | Daughter | — | Virginia |
| 69 | Lucille Frogden | 7 | Daughter | — | Virginia |
| 70 | Don Frogden | 5 | Son | — | Virginia |
| 71 | Randolph Frogden | 3 | Son | — | Virginia |
| 72 | Henry Chuck | 79 | Head | — | North Carolina |
| 73 | Harry Taylor | 23 | Head | Laborer | Maryland |
| 74 | Laura Taylor | 54 | Mother | — | Maryland |
| 75 | Frank Johnson THIS PERSON | 39 | Head | Laborer | Maryland |
| 76 | Mattie Johnson | 27 | Wife | — | Virginia |
| 77 | Frank Jr Johnson | 3 | Son | — | Maryland |
| 78 | Sherry Johnson | 1 | Son | — | Maryland |
| 79 | Mattie Johnson | 0 | Daughter | — | Maryland |
| 80 | Extra Line | None | — | — | — |
Pedigree Summary
Frank
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 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)