WG
William Gross — 1940 US Census Record
Model Tree available1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this William Gross across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed), with identified parents George & George — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Gross |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | La Porte City Town |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 988 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | La Porte City Town |
| Est. Birth Year | ~1910 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Florene Gross | Daughter | — | 1 | ~1939 |
| William Gross | Head | — | 30 | ~1910 |
| Hazel Gross | Spouse | — | 20 | ~1920 |
Census Appearances
1920
Blackhawk, Iowa
Son, age 11
Blackhawk, Iowa · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gross |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Black Hawk, …
Son, age 21
Black Hawk, Iowa · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gross |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Black-Hawk-County, Iowa
Head, age 30
Black-Hawk-County, Iowa · implied b. ~1910 — 3 household members
| Surname | Gross |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | La Porte City Town |
| 1935 Residence (County) | Black Hawk |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 22 |
| Income (1939) | 988 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 William Gross across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father George Gross (~0.92 confidence) and father George Gross (~0.92 confidence) and mother Emma Gross (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Gross
b. ~1878
Source father
● Household
· direct · ~0.92
Father
George Gross
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Emma Gross
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Gross
Head · 1940 · age 30 · b. ~1910 · Iowa
★ 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 — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-00065)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Patrick W O'Brien | 57 | Head | Clerk | Illinois |
| 42 | Rose O'Brien | 64 | Wife | — | Iowa |
| 43 | William O'Brien | 22 | Son | Laborer | Iowa |
| 44 | Metta Jurgens | 45 | Head | — | Denmark |
| 45 | Dorothy Jurgens | 17 | Daughter | — | Iowa |
| 46 | George Gross | 63 | Head | Laborer | Indiana |
| 47 | Emma Gross | 61 | Wife | — | Indiana |
| 48 | Albert Gross | 33 | Head | Laborer | Indiana |
| 49 | Ray Gross | 10 | Son | — | Iowa |
| 50 | Dixie Lee Gross | 8 | Daughter | — | Iowa |
| 51 | John Gross | 7 | Son | — | Iowa |
| 52 | Betty Jean Gross | 5 | Daughter | — | Iowa |
| 53 | Delores Gross | 2 | Daughter | — | Iowa |
| 54 | William Gross THIS PERSON | 30 | Head | Laborer | Indiana |
| 55 | Hazel Gross | 20 | Wife | — | Iowa |
| 56 | Florene Gross | 1 | Daughter | — | Iowa |
| 57 | Orlin Rundel | 42 | Head | Laborer | Iowa |
| 58 | Frances Rundel | 40 | Wife | — | Iowa |
| 59 | Donald Rundel | 21 | Son | Laborer | Iowa |
| 60 | Dorothy Rundel | 17 | Daughter | — | Iowa |
| 61 | Harry Edsell | 52 | Head | Laborer | Iowa |
| 62 | Louis Edsell | 15 | Son | — | Iowa |
| 63 | Elmina Edsell | 83 | Mother | — | Illinois |
| 64 | Belle Frisby | 70 | Head | — | Iowa |
| 65 | Gale Plummer | 20 | Roomer | — | Iowa |
| 66 | Francis M Good | 68 | Head | — | Iowa |
| 67 | Minnie Good | 53 | Wife | — | Illinois |
| 68 | Leland Bogenstos | 30 | Head | — | Iowa |
| 69 | Edith Bogenstos | 27 | Wife | — | Iowa |
| 70 | Beverly Jean Bogenstos | 7 | Daughter | — | Iowa |
| 71 | Lela Mae Bogenstos | 5 | Daughter | — | Iowa |
| 72 | Dale Bogenstos | 2 | Son | — | Michigan |
| 73 | Loretta Bogenstos | 1 | Daughter | — | Michigan |
| 74 | Alvey Richard Newkirk | 70 | Head | Operator | Indiana |
| 75 | Barbara E Newkirk | 61 | Wife | — | Germany |
| 76 | Theodore Newkirk | 38 | Son | Helper | Illinois |
| 77 | Cicero Good | 81 | Head | — | Iowa |
| 78 | Barbara Good | 74 | Wife | — | Indiana |
| 79 | Bert A Smetzer | 42 | Head | Lineman | Iowa |
| 80 | Martha Smetzer | 19 | Wife | — | Iowa |
Pedigree Summary
William
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)