RH
Robert Holmes — 1940 US Census Record
Model Tree available1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Robert Holmes across the 1920, 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Holmes |
| Given Name | Robert L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | T & D 2 |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Occupation | cowhand |
| Industry | Ranch |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | G 8 |
| 1935 Residence | Arizona |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Occupation | Cowhand |
| Township / Ward | T D 2 |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Gordon Norman | Daughter | — | 11 | ~1929 |
| Mary Holmes | Spouse | — | 61 | ~1879 |
| Robert Holmes | Son | — | 21 | ~1919 |
| Martin Holmes | Son | — | 37 | ~1903 |
| Robert Holmes | Head | — | 59 | ~1881 |
Census Appearances
1920
Maricopa, Arizona
Son, age 1
Maricopa, Arizona · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holmes |
| Given Name | Robert G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1930
Maricopa, Arizona
Son, age 11
Maricopa, Arizona · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holmes |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Son, age 21
Maricopa-County, Arizona · implied b. ~1919 — 5 household members
| Surname | Holmes |
| Given Name | Robert L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | T & D 2 |
| 1935 Residence (County) | Maricopa |
| Occupation | cowhand |
| Industry | Ranch |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | G 8 |
| 1935 Residence | Arizona |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 Holmes across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Holmes (~0.92 confidence) and mother Mary Holmes (~0.92 confidence) and mother Mary Holmes (~0.92 confidence) and father R Holmes (~0.92 confidence) and father Robert Holmes (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Holmes
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Holmes
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Holmes
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
R Holmes
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Robert Holmes
b. ~1881
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Holmes
Son · 1940 · age 21 · b. ~1919 · Arizona
★ You are viewing this record
Sibling
Martin Holmes
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Norman
Sibling · 1940 · age 11
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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00107-00333)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Johnnie Genovian | 13 | son | — | Colorado |
| 2 | William Russell Gatley | 10 | son | — | Colorado |
| 3 | Beulah Belle Gatley | 7 | daughter | — | Arizona |
| 4 | Herman John Gatley | 3 | son | — | Arizona |
| 5 | David Ernest Gatley | 1 | son | — | Arizona |
| 6 | Robert M. Holmes | 59 | Head | Owner | Ohio |
| 7 | Mary Holmes | 61 | wife | — | Ohio |
| 8 | Martin Holmes | 37 | son | Helper | Ohio |
| 9 | Robert L. Holmes THIS PERSON | 21 | son | Cowhand | Arizona |
| 10 | Gordon Norman | 11 | daughter | — | Arizona |
| 11 | David J. Holmes | 35 | Head | Mechanic | Ohio |
| 12 | Grace Holmes | 30 | wife | — | Kansas |
| 13 | John D. Gibb | 48 | Head | — | Arkansas |
| 14 | Aneta Gibb | 43 | wife | — | Arkansas |
| 15 | Aneta Evalena Gibb | 6 | daughter | — | Arizona |
| 16 | Edward G. Sweet | 47 | Head | Paint Foreman | Illinois |
| 17 | Martha Sweet | 41 | wife | — | Belgium |
| 18 | Marion De Decker | 23 | daughter | Clerk | Illinois |
| 19 | Margery Sweet | 18 | daughter | — | Illinois |
| 20 | Bill W. Ross | 23 | Head | Cattle Buyer | Arizona |
| 21 | Charles Ross | 19 | Brother | Radio Contactor | Arizona |
| 22 | Carl Pylant | 22 | Head | Aviator | Arizona |
| 23 | Joyce Pylant | 18 | wife | — | Missouri |
| 24 | Jerry Lee Pylant | 2 | son | — | Arizona |
| 25 | Roy Armstrong | 30 | Head | Laborer | Kansas |
| 26 | Delores Armstrong | 26 | wife | — | Nebraska |
| 27 | James Nation | 5 | Head | — | — |
| 28 | Freda Nation | None | wife | — | — |
| 29 | Ferdinand J. Paul | 54 | Head | Manager | Ohio |
| 30 | Emma Paul | 45 | wife | Dept Mgr | Ohio |
| 31 | Dine A. Theen | 47 | Head | — | Unknown |
| 32 | Clyde P. Moose | 46 | Head | Ranger | Texas |
| 33 | Ruby Moose | 43 | wife | — | Texas |
| 34 | — | None | — | — | — |
| 35 | Howard Dangerfield | 39 | Head | Manager | Ohio |
| 36 | Lena Dangerfield | 35 | wife | — | North Carolina |
| 37 | James L. Prevatte | 38 | Head | Clerk | North Carolina |
| 38 | James Livern | 30 | Head | — | Ohio |
| 39 | Margaret Livern | 30 | wife | — | Ohio |
| 40 | Birdie Livern | 58 | Mother | — | Ohio |
Pedigree Summary
Robert + 2 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)