HH
Harry Hoffman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Harry Hoffman across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Charles & Joseph — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Machinist |
| Industry | Piston |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Machinist |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Ida Hoffman | Daughter | — | 8 | ~1932 |
| Alice Hoffman | Daughter | — | 15 | ~1925 |
| Harry Hoffman | Son | — | 21 | ~1919 |
| Charles Hoffman | Son | — | 12 | ~1928 |
| Charles Hoffman | Head | — | 50 | ~1890 |
| Grace Hoffman | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Baltimore, Maryland
Son, age 1
Baltimore, Maryland · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hofman |
| Given Name | Henry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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 11
Baltimore, Maryland · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 21
Baltimore-City-County, Maryland · implied b. ~1919 — 6 household members
| Surname | Hoffman |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Machinist |
| Industry | Piston |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 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 Harry Hoffman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Hoffman (~0.92 confidence) and father Joseph Hofman (~0.92 confidence) and mother Grace Hoffman (~0.92 confidence) and mother Grace Hoffman (~0.92 confidence) and mother Helen Hofman (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Hoffman
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Joseph Hofman
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Grace Hoffman
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Grace Hoffman
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Helen Hofman
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Hoffman
Son · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Ida Hoffman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Hoffman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Hoffman
Sibling · 1940 · age 15
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-t0627-01530-00486)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Purdy | 63 | Head | — | Maryland |
| 42 | Raymond Purdy | 30 | Son | Type Setter | Maryland |
| 43 | Marguerite Snoops | 46 | Head | Barmaid | Maryland |
| 44 | John Martin | 23 | Son | Labourer | Maryland |
| 45 | Carl Martin | 29 | Son | Clerk | Maryland |
| 46 | Flora M. Martin | 29 | Wife | — | Maryland |
| 47 | Harry Muson | 35 | Lodger | Labourer | Maryland |
| 48 | Frank Novak | 25 | Lodger | Presser | Maryland |
| 49 | James J. Hayes | 47 | Lodger | — | Maryland |
| 50 | Marie R. Adams | 53 | Head | — | Maryland |
| 51 | — | None | — | — | — |
| 52 | Charles Hoffman | 50 | Head | — | Maryland |
| 53 | Grace Hoffman | 49 | Wife | — | Maryland |
| 54 | Harry Hoffman THIS PERSON | 21 | Son | Machinist | Maryland |
| 55 | Alice Hoffman | 15 | Daughter | — | Pennsylvania |
| 56 | Charles Hoffman | 12 | Son | — | Pennsylvania |
| 57 | Ida Hoffman | 8 | Daughter | — | Maryland |
| 58 | Barton Sr. Sparklin | 49 | Head | Clerk | Maryland |
| 59 | Lula M. Sparklin | 48 | Wife | Clerk | Maryland |
| 60 | Barton Jr. Sparklin | 20 | Son | New Worker | Maryland |
| 61 | William C. Sparklin | 19 | Son | — | Maryland |
| 62 | Virginia Sparklin | 16 | Daughter | — | Maryland |
| 63 | Ruth Sparklin | 11 | Daughter | — | Maryland |
| 64 | Donald Sparklin | 11 | Son | — | Maryland |
| 65 | Peter O'Connor | 83 | Head | — | Ireland |
| 66 | Mary O'Connor | 53 | Daughter | — | Maryland |
| 67 | John O'Connor | 50 | Son | Labourer | Maryland |
| 68 | Margaret O'Connor | 42 | Daughter | Straw Trimmer | Maryland |
| 69 | Ella O'Connor | 40 | Daughter | Clerk | Maryland |
| 70 | Thomas P. Martin | 77 | Head | — | Maryland |
| 71 | Katherine Martin | 74 | Wife | — | Virginia |
| 72 | Ellen Liberty | 68 | Sister in law | — | Virginia |
| 73 | Daniel Quigley | 56 | Head | Watchman | Maryland |
| 74 | Hattie Quigley | 51 | Wife | — | Maryland |
| 75 | Harry Quigley | 24 | Son | Sweeper | Maryland |
| 76 | Edith Quigley | 28 | Daughter | Housekeeper | Maryland |
| 77 | William Quigley | 18 | Son | New Worker | Maryland |
| 78 | Robert Anderson | 71 | Head | — | S. Carolina |
| 79 | John Hager | 37 | Lodger | Laborer | Maryland |
| 80 | Jacob Sass | 50 | Lodger | Helper In Stall | Maryland |
Related Census Records
Pedigree Summary
Harry + 3 siblings
Gen 1 · 5 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)