JD
John Day — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Day across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Day |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Salesman |
| Industry | Retail Department Store |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1900 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Salesman |
| Township / Ward | New York City |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Day | Head | — | 60 | ~1880 |
| John Day | Son | — | 29 | ~1911 |
| Clara Day | Spouse | — | 55 | ~1885 |
Census Appearances
1920
New York, …
Son, age 6
New York, New York · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 18
New York, New York · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Laborer |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Son, age 29
New-York-County, New York · implied b. ~1911 — 3 household members
| Surname | Day |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Occupation | Salesman |
| Industry | Retail Department Store |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1900 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Day across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Day (~0.92 confidence) and father John Day (~0.92 confidence) and mother Clara Day (~0.92 confidence) and mother Agnes Day (~0.92 confidence) and father Thomas Day (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Day
b. ~1862
Source father
● Household
· direct · ~0.92
Father
John Day
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Clara Day
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Agnes Day
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Thomas Day
b. ~1894
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Day
Son · 1940 · age 29 · b. ~1911 · New York
★ 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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
31 people indexed on this census page (nara:1940:m-t0627-02654-00624)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Bartolotta | 60 | Head | — | Italy |
| 2 | Carmela Bartolotta | 56 | Wife | — | Italy |
| 3 | Mrs. Marietta Ware | 48 | Head | Stylist | New York |
| 4 | Gloria Ware | 21 | Daughter | Model | New York |
| 5 | Eleanor Johnston | 58 | Head | Sales Lady | New Jersey |
| 6 | Jean Johnston | 33 | Daughter | Stenographer | Pennsylvania |
| 7 | Verna V. Baker | 26 | Head | Cashier | Washington |
| 8 | Paul F. Hagle | 39 | Head | Elec. Engineer | Iowa |
| 9 | Zela Grote | 43 | Head | Accountant | Texas |
| 10 | Pauline Bailey | 41 | Head | Social Worker | Michigan |
| 11 | John R. Laughlin | 35 | Head | Customer'S Man | New York |
| 12 | Dorothy Leland | 32 | Head | Librarian | New York |
| 13 | Constantine Murolo | 27 | Head | Steno. Secretary | Pennsylvania |
| 14 | Elsie E. Murolo | 66 | Mother | — | England |
| 15 | Charles O. Warren | 34 | Head | Science Teacher | Massachusetts |
| 16 | Katherine Warren | 31 | Wife | Scientific Research Worker | New York |
| 17 | Mary W. Nicholson | 34 | Head | Stenographer | N. Carolina |
| 18 | Lillie E. Pittman | 32 | Partner | — | Alabama |
| 19 | John M. Day | 60 | Head | Doorman | Ireland |
| 20 | Clara Day | 55 | Wife | — | New York |
| 21 | John M. Day THIS PERSON | 29 | Son | Salesman | New York |
| 22 | Grover C. Niemeyer | 23 | Head | Designer | Illinois |
| 23 | Mary C. Niemeyer | 24 | Wife | Consultant | Illinois |
| 24 | John P. Rockwood | 53 | Head | Consultant | New York |
| 25 | Emily E. Rockwood | 46 | Wife | Private Secretary | New York |
| 26 | William C. Conger | 41 | Head | Proprietor | New York |
| 27 | Marjorie Conger | 35 | Wife | Receptionist | New Jersey |
| 28 | Christian Michl | 49 | Head | Executive | New York |
| 29 | Margaret Michl | 38 | Wife | Store Manager | Ireland |
| 30 | Madeline Ferber | 48 | Head | Foreign Buyer | France |
| 31 | James Morrison | 53 | Head | Salesman | Georgia |
Pedigree Summary
John
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)