RD
Robert Day — 1940 US Census Record
Model Tree available1940 United States Federal Census · Genesee-County, New York
Our Model Tree links this Robert Day across the 1920, 1930 and 1940 US Censuses in Genesee-County, New York (XGBoost, ~Confirmed), with identified parents Albert & Herman — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Genesee-County, New York |
| Surname | Day |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Batavia |
| 1935 Residence (County) | Genesee |
| Additional Details | |
| Occupation | Helper |
| Industry | Father's business |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Helper |
| Township / Ward | Batavia |
| Est. Birth Year | ~1918 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Day | Son | — | 22 | ~1918 |
| Marian Day | Spouse | — | 48 | ~1892 |
| H Day | Daughter | — | 6 | ~1934 |
| A Day | Head | — | 48 | ~1892 |
| Iris Day | Daughter | — | 18 | ~1922 |
| Shirley Day | Daughter | — | 14 | ~1926 |
Census Appearances
1920
Genesee, New …
Son, age 1
Genesee, New York · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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
Genesee, New …
Son, age 11
Genesee, New York · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Genesee-County, New …
Son, age 22
Genesee-County, New York · implied b. ~1918 — 6 household members
| Surname | Day |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Batavia |
| 1935 Residence (County) | Genesee |
| Occupation | Helper |
| Industry | Father's business |
| Class of Worker | NP |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 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 Robert Day across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Day (~0.92 confidence) and father Herman Day (~0.92 confidence) and mother A Day (~0.92 confidence) and mother Marian Day (~0.92 confidence) and mother Marion Day (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Day
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Herman Day
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
A Day
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Marian Day
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Marion Day
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Day
Son · 1940 · age 22 · b. ~1918 · New York
★ You are viewing this record
Sibling
Iris Day
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
H Day
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Day
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 — Genesee-County, New York
Open full size
1940 US Federal Census — Genesee-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02538-00127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David C. Gluck | 6 | Son | — | New York |
| 2 | Albert E. Radder | 60 | Head | Woodworker | New York |
| 3 | Marie K. Radder | 58 | Wife | — | New York |
| 4 | Jerome J. Radder | 20 | Son | Lathe Hand | New York |
| 5 | Herbert O. Smith | 74 | Head | Proprietor | New York |
| 6 | Florence Smith | 74 | Wife | — | New York |
| 7 | Lena E. Smith | 70 | Head | — | New York |
| 8 | Extra Line Smith | None | — | — | — |
| 9 | Lawrence C. White | 41 | Head | Toolmaker | New York |
| 10 | Betsy J. White | 42 | Wife | — | New York |
| 11 | Walter R. Stevens | 47 | Head | Die Caster | New York |
| 12 | Charlotte M. Stevens | 51 | Wife | — | Michigan |
| 13 | Edward J. Simpson | 54 | Head | Mechanic | Pennsylvania |
| 14 | Sarah A. Simpson | 53 | Wife | — | Pennsylvania |
| 15 | Charles E. Myers | 59 | Head | Machinist | New York |
| 16 | Anna E. Myers | 70 | Wife | — | Pennsylvania |
| 17 | Roy C. Patterson | 61 | Head | Assembly Worker | New York |
| 18 | Fayka E. Patterson | 47 | Cousin | — | New York |
| 19 | Extra Line Patterson | None | — | — | — |
| 20 | Mary E. Babcock | 67 | Head | — | New York |
| 21 | Helen S. Shaw | 75 | Sister | — | New York |
| 22 | A. Hermine Day | 48 | Head | Proprietor | New York |
| 23 | Marian E. Day | 48 | Wife | — | New York |
| 24 | Robert H. Day THIS PERSON | 22 | Son | Helper | New York |
| 25 | Iris M. Day | 18 | Daughter | — | New York |
| 26 | Shirley E. Day | 14 | Daughter | — | New York |
| 27 | H. Joanne Day | 6 | Daughter | — | New York |
| 28 | Raymond L. Laney | 38 | Head | Salesman-Driver | New York |
| 29 | Margaret A. Laney | 40 | Wife | — | New York |
| 30 | Loretta K. Laney | 11 | Daughter | — | New York |
| 31 | Loren Laney | 10 | Son | — | New York |
| 32 | James D. Laney | 6 | Son | — | New York |
| 33 | Margaret A. Laney | 4 | Daughter | — | New York |
| 34 | Paul B. Laney | 2 | Son | — | New York |
| 35 | Mary A. Bolt | 59 | Head | — | New York |
| 36 | Daughter Beulah M. | None | F | Utilities Office | — |
| 37 | Michael J. Kielly | 50 | Head | Laborer | Eire |
| 38 | Rose Kielly | 47 | Wife | Bookkeeper | New York |
| 39 | Robert J. Holmes | 35 | Head | Foreman | New York |
| 40 | Gladys M. Holmes | 35 | Wife | — | New York |
Pedigree Summary
Robert + 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)