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John Day — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Day across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 6-person household.
Age 66
b. ~1874
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Day |
| Given Name | John W. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | core maker |
| Industry | steel mfg. |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 1560 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Core Maker |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1874 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Day | Head | — | 66 | ~1874 |
| Phil Waller | Other | — | 20 | ~1920 |
| Margaret Waters | Other | — | 88 | ~1852 |
| Margaret Day | Other | — | 2 | ~1938 |
| Edward Day | Son | — | 35 | ~1905 |
| Margaret Day | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Baltimore, Maryland
Other, age 45
Baltimore, Maryland · implied b. ~1875 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Stevedore |
| Industry | Laborer |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 51
Baltimore, Maryland · implied b. ~1879 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 28 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Detective |
| Industry | Police Dept |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 66
Baltimore-City-County, Maryland · implied b. ~1874 — 6 household members
| Surname | Day |
| Given Name | John W. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | core maker |
| Industry | steel mfg. |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 1560 |
| Highest Grade | No 5 |
| 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 Day across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Day
Head · 1940 · age 66 · b. ~1874 · 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-t0627-01532-00403)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Forrest | 41 | wife | — | Maryland |
| 2 | John W. Day THIS PERSON | 66 | head | Core Maker | Maryland |
| 3 | Margaret E. Day | 62 | wife | — | Maryland |
| 4 | Edward G. Day | 35 | son | Truck Driver | Maryland |
| 5 | Margaret C. Day | 2 | daughter-in-law | — | Maryland |
| 6 | Margaret C. Waters | 88 | mother-in-law | — | Maryland |
| 7 | Phil Waller | 20 | grandson | Lithograph | Maryland |
| 8 | William Shaffrey | 45 | head | Policeman | Maryland |
| 9 | Agnes Shaffrey | 43 | wife | — | Maryland |
| 10 | Margaret Shaffrey | 22 | daughter | — | Maryland |
| 11 | William Shaffrey | 21 | son | Baker | Maryland |
| 12 | Edwin Shaffrey | 20 | son | Salesman | Maryland |
| 13 | Norman B. Henn | 41 | head | Policeman | Maryland |
| 14 | Maude Henn | 39 | wife | — | Maryland |
| 15 | Mary C. Henn | 19 | daughter | Sales Lady | Maryland |
| 16 | William S. Henn | 14 | son | — | Maryland |
| 17 | Helen A. Henn | 7 | daughter | — | Maryland |
| 18 | Norman Deleher | 42 | head | Boiler Maker | Maryland |
| 19 | Marie Deleher | 38 | wife | Stuffer | Maryland |
| 20 | Glenn Hollinsbeck | 24 | head | Nurse | New York |
| 21 | Virginia Hollinsbeck | 21 | wife | Order Clerk | Maryland |
| 22 | John Gulkis | 60 | head | — | Lithuania |
| 23 | Loretta Arnold | 29 | head | Book Binder | Maryland |
| 24 | Dolly Kraft | 13 | daughter | — | Maryland |
| 25 | Thomas Kelly | 70 | head | Labour | Irish Free State |
| 26 | Annie Kelly | 75 | wife | — | Irish Free State |
| 27 | George Wheeler | 59 | head | House Painter | Maryland |
| 28 | Agnes Wheeler | 58 | wife | Sewing | Maryland |
| 29 | Eugene W. Anderson | 48 | head | Salesman | Maryland |
| 30 | Grace Anderson | 45 | wife | — | Maryland |
| 31 | Eugene W. Jr. Anderson | 15 | son | — | Maryland |
| 32 | Betty Jane Anderson | 13 | daughter | — | Maryland |
| 33 | Eustace Brown | 24 | head | Stock Clerk | Florida |
| 34 | Mary Brown | 23 | wife | Waitress | Maryland |
| 35 | Wilbur Kingsley | 40 | head | Instructor | Maryland |
| 36 | Mildred Kingsley | 28 | wife | — | Maryland |
| 37 | Wilbur Kingsley | 16 | son | — | Maryland |
| 38 | Clara Kingsley | 5 | daughter | — | Maryland |
| 39 | Virginia Kingsley | 2 | daughter | — | Maryland |
| 40 | Edgar P. Ruckle | 63 | head | Plumber | Maryland |
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)