JB
John Baldwin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Baldwin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a head (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Male
Head
Born: Rhode Island
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Baldwin |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Balto |
| Additional Details | |
| Occupation | Salesman |
| Industry | Real Estate |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 1681 |
| Highest Grade | C 4 |
| 1935 Residence | Maryland |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Occupation | Salesman |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1910 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Sarah Baldwin | Spouse | — | 32 | ~1908 |
| John Baldwin | Son | — | 5 | ~1935 |
| Margaret Houson | Other | — | 28 | ~1912 |
| Timothy Baldwin | Son | — | 3 | ~1937 |
| John Baldwin | Head | — | 30 | ~1910 |
Census Appearances
1920
None, Maryland
Son, age 10
None, Maryland · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Maryland |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Baltimore, Maryland
Son, age 21
Baltimore, Maryland · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Maryland |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Baltimore-City-County, Maryland
Head, age 30
Baltimore-City-County, Maryland · implied b. ~1910 — 5 household members
| Surname | Baldwin |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Balto |
| Occupation | Salesman |
| Industry | Real Estate |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 1681 |
| Highest Grade | C 4 |
| 1935 Residence | Maryland |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Baldwin across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Charles Baldwin (~0.92 confidence) and father Charles Baldwin (~0.92 confidence) and mother Fannie Baldwin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Baldwin
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Charles Baldwin
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Fannie Baldwin
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Baldwin
Head · 1940 · age 30 · b. ~1910 · 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-t0627-01518-00137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Julia C. West | 5 | Daughter | — | Maryland |
| 2 | William J. Morris | 75 | Head | Accountant | Maryland |
| 3 | Mary E. Morris | 71 | Wife | — | Maryland |
| 4 | Elizabeth Brevit | 40 | Daughter | Steno | Maryland |
| 5 | Mary Bates | 81 | Sister | Lady | Maryland |
| 6 | Maxine Van Hulsteyn | 67 | Head | Lady | Maryland |
| 7 | Virginia Cordell | 72 | Ward | Artist | Maryland |
| 8 | Isabelle La Roche | 57 | Boarder | Nurse | Maryland |
| 9 | John H. Baldwin THIS PERSON | 30 | Head | Salesman | Rhode Island |
| 10 | Sarah H. Baldwin | 32 | Wife | Teacher | Delaware |
| 11 | John Jr. Baldwin | 5 | Son | — | Maryland |
| 12 | Timothy H. Baldwin | 3 | Son | — | Maryland |
| 13 | Margaret Houson | 28 | Servant | Nurse | Maryland |
| 14 | Scott Mccormick | 31 | Head | Houghton | Maryland |
| 15 | Virginia Mccormick | 30 | Wife | Home Maker | Maryland |
| 16 | Scott Jr. Mccormick | 6 | Son | — | Maryland |
| 17 | Eleanor Schaefer | 65 | Head | Home Maker | Maryland |
| 18 | Martha E. Schaefer | 60 | Sister | Clerk | Maryland |
| 19 | George C. Schaefer | 54 | Brother | Bookkeeper | Georgia |
| 20 | Mary Singley | 37 | Head | Seller | Louisiana |
| 21 | Bette Lee Singley | 14 | Daughter | School | Oklahoma |
| 22 | Eleanor Singley | 6 | Daughter | — | Maryland |
| 23 | — | None | — | — | — |
| 24 | — | None | — | — | — |
| 25 | Nita Davis | 76 | Head | Lady | Maryland |
| 26 | Edward Duffy | 73 | Head | Lawyer | Maryland |
| 27 | Chloe Duffy | 70 | Wife | Lady | South Carolina |
| 28 | Francis Duffy | 36 | Daughter | Lady | Maryland |
| 29 | Mary French | 41 | Daughter | Lady | Maryland |
| 30 | Chloe French | 17 | Grand D. | High School | New York |
| 31 | John French | 8 | Grandson | — | New York |
| 32 | Edward Hammond | 75 | Head | Retired Lawyer | Maryland |
| 33 | Edward Jr. Hammond | 38 | Son | Dr. Science | Maryland |
| 34 | Emily E. Hammond | 33 | Daughter | — | Maryland |
| 35 | Mary Hutchins | 65 | Head | — | Maryland |
| 36 | Anna Hutchins | 55 | Sister | — | Maryland |
| 37 | Katherine Hutchins | 45 | Sister | — | Maryland |
| 38 | Susan Murdock | 78 | Head | Lady | Maryland |
| 39 | Edward T. Morris | 42 | Nephew | Professor | Maryland |
| 40 | Parron | None | Head | — | — |
Pedigree Summary
John
Gen 1 · 3 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)