RH
Robert Holland — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Robert Holland across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Geo & Quit — first a son (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Male
Son
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Holland |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Salesman |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 2748 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Salesman |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Edith Holland | Spouse | — | 28 | ~1912 |
| Helen Holland | Head | — | 56 | ~1884 |
| Barbara Holland | Daughter | — | 2 | ~1938 |
| Robert Holland | Son | — | 28 | ~1912 |
| Mary Holland | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Polk, Iowa
Son, age 8
Polk, Iowa · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 18
Polk, Iowa · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | Robert B |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 28
Polk-County, Iowa · implied b. ~1912 — 5 household members
| Surname | Holland |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Salesman |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 2748 |
| Highest Grade | C 3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Holland across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Geo Holland (~0.92 confidence) and father Quit Holland (~0.92 confidence) and mother Adelia Holland (~0.92 confidence) and mother Edith Holland (~0.50 confidence) and mother Helen Holland (~0.92 confidence) and mother Helen Holland (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.85
Father
Geo Holland
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Quit Holland
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Adelia Holland
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Edith Holland
b. ~1912
Source mother
● Household
· direct · ~0.5
Mother
Helen Holland
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Helen Holland
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Holland
Son · 1940 · age 28 · b. ~1912 · Iowa
★ You are viewing this record
Sibling
Barbara Holland
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Holland
Sibling · 1940 · age 9
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01193-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leota Huston | 47 | Wife | — | Iowa |
| 42 | Thomas Scarlett | 56 | Head | Clerk | Iowa |
| 43 | Florence Scarlett | 48 | Wife | Saleslady | South Dakota |
| 44 | Carl J. Scarlett | 59 | Brother | Clerk | Sweden |
| 45 | Jean Taylor | 57 | Head | Clerk | Scotland |
| 46 | Madeline Taylor | 24 | Daughter | — | Iowa |
| 47 | Cefre A. Huston | 63 | Daughter | — | Iowa |
| 48 | Sarah Short | 86 | Mother | — | Ohio |
| 49 | H. Virgil Harden | 60 | Head | Salesman | Iowa |
| 50 | Cathy Harden | 57 | Wife | — | Iowa |
| 51 | Irene Piper | 59 | Head | Housekeeper | Iowa |
| 52 | Edward Wright | 39 | Head | Salesman | Iowa |
| 53 | Verna Wright | 42 | Wife | — | Iowa |
| 54 | Rosemary Wright | 13 | Daughter | — | Iowa |
| 55 | Robert Wright | 12 | Son | — | Iowa |
| 56 | Kathryn Wright | 10 | Daughter | — | Iowa |
| 57 | John Wright | 4 | Son | — | Iowa |
| 58 | Andrew Forest | 41 | Head | Credit Man | Iowa |
| 59 | Nell Forest | 40 | Wife | — | Iowa |
| 60 | Andrew Jr. Forest | 10 | Son | — | Iowa |
| 61 | John F. Forest | 6 | Son | — | Iowa |
| 62 | George Shane | 33 | Head | Reporter | Iowa |
| 63 | Florence Shane | 29 | Wife | — | Iowa |
| 64 | Felicia Shane | 6 | Daughter | — | Iowa |
| 65 | Kathryn Shane | 5 | Daughter | — | Iowa |
| 66 | George Petterson | 66 | Head | Salesman | Iowa |
| 67 | Gertie Petterson | 59 | Wife | — | Iowa |
| 68 | Vacant | None | — | — | — |
| 69 | Orville Hofstra | 27 | Head | Lawyer | Iowa |
| 70 | Erma Hofstra | 25 | Wife | — | Iowa |
| 71 | Helen Holland | 56 | Head | — | Iowa |
| 72 | Robert Holland THIS PERSON | 28 | Son | Salesman | Iowa |
| 73 | Edith Holland | 28 | Wife | — | Iowa |
| 74 | Mary Lou Holland | 9 | Daughter | — | Iowa |
| 75 | Barbara Holland | 2 | Daughter | — | Iowa |
| 76 | Charles Bennett | 45 | Head | Salesman | Nebraska |
| 77 | Phyllis Bennett | 17 | Daughter | — | Iowa |
| 78 | Virginia Bennett | 13 | Daughter | — | Iowa |
| 79 | Lulu Cole | 56 | Boarder | — | Nebraska |
| 80 | Maud Cole | 54 | Sister-in-law | — | Nebraska |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 6 parents
~0.85
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)