MJ
Melvin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Melvin Johnson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Catherine & Dewitt — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Johnson |
| Given Name | Melvin G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Grocery Clerk |
| Industry | Retail Food Market |
| Class of Worker | PW |
| Hours Worked | 59 |
| Income (1939) | 832 |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Grocery Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Melvin | Age | Birth yr |
|---|---|---|---|---|
| Catherine Wade | Daughter | — | 26 | ~1914 |
| Dewitt Johnson | Head | — | 47 | ~1893 |
| Melvin Johnson | Son | — | 23 | ~1917 |
| Agnes Johnson | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Baltimore, Maryland
Son, age 2
Baltimore, Maryland · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
Son, age 12
Baltimore, Maryland · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 23
Baltimore-City-County, Maryland · implied b. ~1917 — 4 household members
| Surname | Johnson |
| Given Name | Melvin G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | Baltimore City |
| Occupation | Grocery Clerk |
| Industry | Retail Food Market |
| Class of Worker | PW |
| Hours Worked | 59 |
| Income (1939) | 832 |
| Highest Grade | H 2 |
| 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 Melvin Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Catherine Johnson (~0.92 confidence) and father Dewitt Johnson (~0.92 confidence) and mother Agnes Johnson (~0.92 confidence) and mother Ruth Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Johnson
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Dewitt Johnson
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Agnes Johnson
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Ruth Johnson
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Johnson
Son · 1940 · age 23 · b. ~1917 · Maryland
★ You are viewing this record
Sibling
Catherine Wade
Sibling · 1940 · age 26
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-t0627-01532-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Samuel Goldman | 44 | Head | Proprietor | Maryland |
| 42 | Minnie C Goldman | 40 | Wife | Grocer Clerk | Russia |
| 43 | Dewitt R Johnson | 47 | Head | Manager | Virginia |
| 44 | Agnes A Johnson | 46 | Wife | — | Maryland |
| 45 | Melvin G Johnson THIS PERSON | 23 | Son | Grocery Clerk | Maryland |
| 46 | Catherine Wade | 26 | Daughter | Checker | Maryland |
| 47 | Richard C Baer | 23 | Head | Foreman | Maryland |
| 48 | Thelma E Baer | 19 | Wife | — | Maryland |
| 49 | Edward J Shabisky | 29 | Head | Patrolman | Maryland |
| 50 | Evelyn K Shabisky | 25 | Wife | — | Maryland |
| 51 | Edward M Shabisky | 2 | Son | — | Maryland |
| 52 | Leo A M Readmond | 62 | Head | Male Nurse | Maryland |
| 53 | Claude K Readmond | 50 | Brother | Male Nurse | Maryland |
| 54 | Maude V Graves | 52 | Sister | Forelady | Maryland |
| 55 | Frances V Graves | 17 | Niece | — | Dist of Columbia |
| 56 | Clarence E Cornwell | 43 | Head | Chauffeur | Maryland |
| 57 | Anna R Cornwell | 42 | Wife | — | Maryland |
| 58 | George P Jr Jeffers | 33 | Head | Radio Assembly Man | Maryland |
| 59 | Lydia Jeffers | 35 | Wife | Account Clerk | Maryland |
| 60 | George P Jeffers | 61 | Father | — | Maryland |
| 61 | Eliza E Jeffers | 60 | Mother | — | Maryland |
| 62 | Hubert H Bowman | 24 | Head | Waiter | Virginia |
| 63 | M Bernadine Bowman | 25 | Wife | — | Maryland |
| 64 | Joseph B Bowman | 0 | Son | — | Maryland |
| 65 | William A Wurster | 23 | Head | Manager | New York |
| 66 | Rose P Wurster | 23 | Wife | — | Maryland |
| 67 | John L Clarke | 36 | Head | Manager | Maryland |
| 68 | Margaret M Clarke | 35 | Wife | — | Germany |
| 69 | Margaret D Clarke | 8 | Daughter | — | Maryland |
| 70 | Geraldine A Clarke | 4 | Daughter | — | Maryland |
| 71 | James J Clarke | 73 | Father | — | Eire |
| 72 | Ernest M Adams | 41 | Head | Fireman | Dist of Columbia |
| 73 | Bertha A Adams | 40 | Wife | — | Maryland |
| 74 | Ernest M Jr Adams | 7 | Son | — | Maryland |
| 75 | William F Doering | 29 | Head | Machinist | Maryland |
| 76 | Margaret C Doering | 24 | Wife | Presser | Maryland |
| 77 | Thomas A Krears | 52 | Head | Proprietor | Greece |
| 78 | Madolin Krears | 37 | Wife | — | Maryland |
| 79 | Eloise E Krears | 19 | Daughter | Stenographer | Maryland |
| 80 | Helene N Krears | 15 | Daughter | — | Maryland |
Related Census Records
Pedigree Summary
Melvin + 1 sibling
Gen 1 · 4 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)