JW
John Wolf — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Wolf across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Wolf |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Manager |
| Industry | Retail Grocery Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1800 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Manager |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1915 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Wolf | Head | — | 58 | ~1882 |
| Milford Wolf | Son | — | 17 | ~1923 |
| John Wolf | Son | — | 25 | ~1915 |
| Fannie Wolf | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Baltimore, Maryland
Son, age 6
Baltimore, Maryland · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolff |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 16
Baltimore, Maryland · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolf |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| Occupation | Clerk |
| Industry | Dept Store |
| 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 25
Baltimore-City-County, Maryland · implied b. ~1915 — 4 household members
| Surname | Wolf |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE |
| 1935 Residence (County) | Baltimore City |
| Occupation | Manager |
| Industry | Retail Grocery Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1800 |
| Highest Grade | No 7 |
| 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 John Wolf across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Wolff (~0.92 confidence) and father John Wolf (~0.92 confidence) and mother Bessie Wolff (~0.92 confidence) and father John Wolf (~0.92 confidence) and mother Rose Wolf (~0.92 confidence) and mother Fannie Wolf (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Wolff
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Wolf
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Bessie Wolff
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
John Wolf
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Rose Wolf
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Fannie Wolf
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Wolf
Son · 1940 · age 25 · b. ~1915 · Maryland
★ You are viewing this record
Sibling
Milford Wolf
Sibling · 1940 · age 17
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-t0627-01538-00015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josephine Rowland | 30 | Wife | — | Maryland |
| 42 | Margaret Dorsch | 75 | Head | — | Maryland |
| 43 | Harry Cochran | 35 | Son in law | Chauffeur | Maryland |
| 44 | Margaret Cochran | 30 | Daughter | — | Maryland |
| 45 | Joseph F. Roth | 48 | Head | Machinist | Maryland |
| 46 | Eleonora Roth | 40 | Wife | — | Maryland |
| 47 | Joseph Roth | 19 | Son | Laborer | Maryland |
| 48 | Marie Roth | 17 | Daughter | Seamstress | Maryland |
| 49 | Norma Roth | 10 | Daughter | — | Maryland |
| 50 | Katherine Zillinski | 50 | Head | Char Lady | Poland |
| 51 | Estelle Rahnis | 31 | Daughter | Photo Engraver | Maryland |
| 52 | David Rahnis | 25 | Son in law | — | Maryland |
| 53 | David Rahnis | 2 | Grandson | — | Maryland |
| 54 | Wesley Parsons | 51 | Head | Electrician | Maryland |
| 55 | Catherine Parsons | 50 | Wife | — | Maryland |
| 56 | Philip T. Schmidt | 25 | Son in law | 13 | Maryland |
| 57 | Bernard Schmidt | 23 | Son in law | Mechanic | Maryland |
| 58 | Theodora Schmidt | 23 | Daughter | — | Maryland |
| 59 | Edward Canoles | 54 | Head | Carpenter | Maryland |
| 60 | M. Alice Canoles | 50 | Wife | — | Maryland |
| 61 | Florence Canoles | 21 | Daughter | Office Work | Maryland |
| 62 | Mary E. Shook | 62 | Head | — | Penna |
| 63 | Walter Adkins | 34 | Son in law | Brick Layer | Maryland |
| 64 | Ruby Adkins | 30 | Daughter | — | Maryland |
| 65 | Floyd Adkins | 13 | Son | — | Maryland |
| 66 | Paul Adkins | 11 | Son | — | Maryland |
| 67 | John Wolf | 58 | Head | Pattern Maker | Maryland |
| 68 | Fannie Wolf | 44 | Wife | — | Maryland |
| 69 | John P. Wolf THIS PERSON | 25 | Son | Manager | Maryland |
| 70 | Milford F. Wolf | 17 | Son | New Worker | Maryland |
| 71 | William Crockett | 57 | Head | Carpenter | Scotland |
| 72 | Isabell Crockett | 42 | Wife | Peeler | Scotland |
| 73 | David Crockett | 15 | Son | — | Maryland |
| 74 | Elizabeth Crockett | 14 | Daughter | — | Maryland |
| 75 | James Crockett | 5 | Son | — | Maryland |
| 76 | John Mcginty | 77 | Lodger | — | Scotland |
| 77 | Mary Coradetti | 59 | Head | — | Penna |
| 78 | Arthur Mackenzie | 34 | Son in law | Operator | Maryland |
| 79 | Eunice Mackenzie | 34 | Daughter | — | Penna |
| 80 | Arthur Mackenzie | 4 | Grandson | — | Maryland |
Related Census Records
Pedigree Summary
John + 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)