RD
Robert Day — 1940 US Census Record
Model Tree available1940 United States Federal Census · El-Paso-County, Colorado
Our Model Tree links this Robert Day across the 1920, 1930 and 1940 US Censuses in El-Paso-County, Colorado (XGBoost, ~Confirmed), with identified parents Arthur & Ina — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | El-Paso-County, Colorado |
| Surname | Day |
| Given Name | Robert H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Colorado Springs City |
| 1935 Residence (County) | El Paso |
| Additional Details | |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Colorado Springs 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Nora Day | Spouse | — | 52 | ~1888 |
| Arthur Day | Head | — | 53 | ~1887 |
| Robert Day | Son | — | 21 | ~1919 |
Census Appearances
1920
El Paso, …
Son, age 1
El Paso, Colorado · implied b. ~1919 — 4 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 | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
El Paso, …
Son, age 11
El Paso, Colorado · implied b. ~1919 — 4 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 | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
El-Paso-County, Colorado
Son, age 21
El-Paso-County, Colorado · implied b. ~1919 — 3 household members
| Surname | Day |
| Given Name | Robert H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Colorado Springs City |
| 1935 Residence (County) | El Paso |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Arthur Day (~0.92 confidence) and mother Ina Day (~0.92 confidence) and mother Nora Day (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Day
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Ina Day
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Nora Day
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Day
Son · 1940 · age 21 · b. ~1919 · Colorado
★ 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 — El-Paso-County, Colorado
Open full size
1940 US Federal Census — El-Paso-County, Colorado
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00461-00145)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joslyn Mary Joslyn | 50 | wife | Housewife | California |
| 42 | Joslyn | None | — | — | — |
| 43 | Carroll H Roberts | 31 | head | Musician | Illinois |
| 44 | Margaret B Roberts | 31 | wife | Housewife | Colorado |
| 45 | Donald B Roberts | 5 | son | — | New Mexico |
| 46 | Marshall Bennett | 53 | brother | — | Conn. |
| 47 | Zeta L Bennett | 57 | mother-in-law | Saleslady | Texas |
| 49 | Minnie L Norris | 71 | head | Housewife | Alabama |
| 50 | Arthur C Day | 53 | head | Bank Teller | Colorado |
| 51 | Nora C Day | 52 | wife | Teacher | Ohio |
| 52 | Robert H Day THIS PERSON | 21 | son | — | Colorado |
| 53 | Charles J Holsworth | 59 | head | Cabinet Maker | Germany |
| 54 | Florence Holsworth | 54 | wife | Housewife | Illinois |
| 55 | Charles C Holsworth | 29 | son | Cabinet Maker | Missouri |
| 57 | Dorothy Hall | 26 | head | Housewife | Iowa |
| 58 | Stephen J Hall | 71 | father | Miner | Iowa |
| 59 | Eldora Hall | 71 | mother | Housewife | Iowa |
| 60 | Carl S Peterson | 29 | head | Bartender | Missouri |
| 61 | Lorane M Peterson | 27 | wife | Housewife | Missouri |
| 62 | Elizabeth J Peterson | 4 | daughter | — | Colorado |
| 63 | Nancy A Peterson | 1 | daughter | — | Colorado |
| 64 | Cebry M Halter | 60 | head | Seamstress | Missouri |
| 65 | Glenn Halter | 16 | son | — | Indiana |
| 66 | Burlon B Conway | 34 | head | Clerk | Colorado |
| 67 | Nadine F Conway | 31 | wife | Housewife | Kansas |
| 68 | Burlon E Conway | 10 | son | — | Colorado |
| 69 | Judith Conway | 2 | daughter | — | Colorado |
| 70 | May Peck | 60 | head | Housewife | Illinois |
| 71 | Argus C Peck | 16 | son | Paper Route | Colorado |
| 72 | James L Taber | 24 | head | Painter | Colorado |
| 73 | Thelma L Taber | 24 | wife | Housewife | Indiana |
| 74 | Barbara J Taber | 10 | daughter | — | Colorado |
| 75 | Robert C Taber | 4 | son | — | Colorado |
| 76 | Frank L Jones | 32 | head | Agent | N. Dakota |
| 77 | Eva B Jones | 33 | wife | Housewife | Colorado |
| 78 | H. Lois Laine | 20 | sister-in-law | — | Colorado |
Pedigree Summary
Robert
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)