FH
Frank Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Frank Hart across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Hart |
| Given Name | Frank |
| 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 | Apprentice |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 615 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Apprentice |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Thomas Hart | Head | — | 51 | ~1889 |
| Helen Hart | Daughter | — | 18 | ~1922 |
| Elizabeth Hart | Spouse | — | 50 | ~1890 |
| Thomas Hart | Son | — | 23 | ~1917 |
| Frank Hart | Son | — | 21 | ~1919 |
| John Hart | Son | — | 20 | ~1920 |
| Madeline Hart | Daughter | — | 14 | ~1926 |
| Catherine Hart | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Baltimore, Maryland
Other, age 11
Baltimore, Maryland · implied b. ~1919 — 24 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hard |
| Given Name | Frank |
| Relationship to Head | Pupil |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | New York |
| Mother's Birthplace | Maryland |
| Occupation | none |
| 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 — 8 household members
| Surname | Hart |
| Given Name | Frank |
| 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 | Apprentice |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 615 |
| Highest Grade | Hs 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 Frank Hart across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Frank Hart
Son · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Thomas Hart
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hart
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hart
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Hart
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Hart
Sibling · 1940 · age 14
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-t0627-01517-00175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Calabrese | 18 | Son | New Worker | Texas |
| 2 | Sadie Calabrese | 16 | Daughter | — | Maryland |
| 3 | Rosario Calabrese | 10 | Son | — | Maryland |
| 4 | Manuel Calabrese | 9 | Son | — | Maryland |
| 5 | Ruth Calabrese | 18 | Daughter | — | Maryland |
| 6 | Doris Calabrese | 15 | Daughter | — | Maryland |
| 7 | Walter White | 36 | Head | — | Maryland |
| 8 | Georgiana White | 33 | Wife | — | Maryland |
| 9 | Walter V. White | 12 | Son | — | Maryland |
| 10 | Howard White | 10 | Son | — | Maryland |
| 11 | Doris White | 8 | Daughter | — | Maryland |
| 12 | Bernadette White | 7 | Daughter | — | Maryland |
| 13 | Franklin White | 6 | Son | — | Maryland |
| 14 | Margaret Hogan | 60 | Head | — | Maryland |
| 15 | James J. Hogan | 21 | Son | Chauffeur | Maryland |
| 16 | Margaret Daugherty | 25 | Lodger | Examiner | Maryland |
| 17 | James P. Ward | 65 | Head | Watchman | Maryland |
| 18 | Jennie Ward | 63 | Sister | — | Maryland |
| 19 | Harry J. Ward | 55 | Brother | Clerk | Maryland |
| 20 | Herbert Ward | 51 | Brother | Laborer | Maryland |
| 21 | Margaret C. Miller | 66 | Head | — | Maryland |
| 22 | William R. Miller | 36 | Son | Shipping Clerk | Maryland |
| 23 | John H. Miller | 35 | Son | Laborer | Maryland |
| 24 | Raymond Reeder | 37 | Son-in-law | Blocker | Maryland |
| 25 | William R. Reeder | 13 | Grandson | — | Maryland |
| 26 | John J. Reeder | 7 | Grandson | — | Maryland |
| 27 | Mary L. Reeder | 4 | Granddaughter | — | Maryland |
| 28 | Michael Sweeney | 46 | Head | Salesman | Ireland |
| 29 | Anna K. Sweeney | 46 | Wife | — | Ireland |
| 30 | Owen Sweeney | 21 | Son | Bell Boy | Maryland |
| 31 | Mary Sweeney | 23 | Daughter | Servant | Maryland |
| 32 | Thomas F. Hart | 51 | Head | Policeman | Ireland |
| 33 | Elizabeth Hart | 50 | Wife | — | Ireland |
| 34 | Thomas J. Hart | 23 | Son | Attendant | Maryland |
| 35 | Frank Hart THIS PERSON | 21 | Son | Apprentice | Maryland |
| 36 | John R. Hart | 20 | Son | — | Maryland |
| 37 | Helen Hart | 18 | Daughter | — | Maryland |
| 38 | Madeline Hart | 14 | Daughter | — | Maryland |
| 39 | Catherine Hart | 12 | Daughter | — | Maryland |
| 40 | Annie Timmings | 75 | Head | — | Ireland |
Related Census Records
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)