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William Roach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Iowa
Our Model Tree links this William Roach across the 1920, 1930 and 1940 US Censuses in Jefferson-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 5-person household.
Age 78
b. ~1862
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Iowa |
| Surname | Roach |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Buchanan Twp. |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Buchanan Twp |
| Est. Birth Year | ~1862 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mattie Roach | Daughter | — | 40 | ~1900 |
| Kathryn Roach | Spouse | — | 67 | ~1873 |
| Joel Roach | Son | — | 32 | ~1908 |
| William Roach | Head | — | 78 | ~1862 |
| Clair Roach | Son | — | 41 | ~1899 |
Census Appearances
1920
Jefferson, Iowa
Head, age 58
Jefferson, Iowa · implied b. ~1862 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roach |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Jefferson, Iowa
Head, age 68
Jefferson, Iowa · implied b. ~1862 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roach |
| Given Name | Will |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 39 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Northern Ireland |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 84 |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Jefferson-County, Iowa
Head, age 78
Jefferson-County, Iowa · implied b. ~1862 — 5 household members
| Surname | Roach |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Buchanan Twp. |
| 1935 Residence (County) | Jefferson |
| Occupation | farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 William Roach across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Roach
Head · 1940 · age 78 · b. ~1862 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Jefferson-County, Iowa
Open full size
1940 US Federal Census — Jefferson-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01170-00037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Jane Berry | 10 | daughter | — | Iowa |
| 42 | Joan F. Berry | 3 | daughter | — | Iowa |
| 43 | Ernest C. Noon | 19 | son-in-law | Farm Laborer | Missouri |
| 44 | Victoria A. Root | 73 | head | Farmer | Ohio |
| 45 | Delbert M. Root | 71 | brother | — | Ohio |
| 46 | Raymond H. Heckethorn | 31 | head | Trucker | Iowa |
| 47 | Mildred V. Heckethorn | 27 | wife | — | Iowa |
| 48 | Henry E. Heckethorn | 3 | son | — | Iowa |
| 49 | Blanche L. Heckethorn | 1 | daughter | — | Iowa |
| 50 | William Roach THIS PERSON | 78 | head | Farmer | Iowa |
| 51 | Kathryn Roach | 67 | wife | — | Ohio |
| 52 | Clair W. Roach | 41 | son | Farmer | Iowa |
| 53 | Mattie Roach | 40 | daughter | — | Iowa |
| 54 | Joel J. Roach | 32 | son | Section Laborer | Iowa |
| 55 | Leland A. Whitaker | 25 | head | Farmer | Iowa |
| 56 | Esther L. Whitaker | 24 | wife | — | Iowa |
| 57 | Thomas P. Whitaker | 1 | son | — | Iowa |
| 58 | Anthony J. Arndt | 45 | head | Farmer | Iowa |
| 59 | Mary H. Arndt | 44 | wife | — | Iowa |
| 60 | John J. Arndt | 14 | son | — | Iowa |
| 61 | James A. Arndt | 12 | son | — | Iowa |
| 62 | Francis J. Arndt | 10 | son | — | Iowa |
| 63 | Mary Ann Arndt | 6 | daughter | — | Iowa |
| 64 | Theresa A. Arndt | 3 | daughter | — | Iowa |
| 65 | William H. Bush | 74 | head | Farm | Iowa |
| 66 | Millie M. Bush | 72 | wife | — | Iowa |
| 67 | Glenn D. Bush | 40 | son | Electrician | Iowa |
| 68 | Charles W. Robinson | 56 | head | Service Station | Iowa |
| 69 | Clara A. Robinson | 56 | wife | — | Iowa |
| 70 | Dell R. Robinson | 26 | son | Service Station | Iowa |
| 71 | Naomi J. Robinson | 18 | daughter | Bookkeeper | Iowa |
| 72 | Logan H. Ogden | 47 | head | Farmer | Illinois |
| 73 | Edythe G. Ogden | 43 | wife | — | Iowa |
| 74 | W. Lloyd Ogden | 19 | son | New Worker | Iowa |
| 75 | Lyndon L. Ogden | 14 | son | — | Iowa |
| 76 | Robert L. Ogden | 12 | son | — | Iowa |
| 77 | Delah E. Ogden | 10 | daughter | — | Iowa |
| 78 | John F. Ogden | 8 | son | — | Iowa |
| 79 | Edythe J. Ogden | 6 | daughter | — | Iowa |
| 80 | Herbert A. Linn | 62 | head | Farmer | Iowa |
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)