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John Dwyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this John Dwyer across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 4-person household.
Age 48
b. ~1892
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Glass Cutter |
| Class of Worker | PW |
| Income (1939) | 800 |
| Highest Grade | C 3 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Glass Cutter |
| Township / Ward | Des Moines |
| Est. Birth Year | ~1892 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Dwyer | Head | — | 48 | ~1892 |
| Alice Dwyer | Spouse | — | 43 | ~1897 |
| John Dwyer | Son | — | 20 | ~1920 |
| James Dwyer | Son | — | 10 | ~1930 |
Census Appearances
1920
Polk, Iowa
Head, age 26
Polk, Iowa · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | New York |
| Occupation | Glass Cutter |
| Industry | Mirror factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Head, age 37
Polk, Iowa · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | England |
| Mother's Birthplace | New York |
| Occupation | Glass Cutter |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5250 |
| Radio Set | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 48
Polk-County, Iowa · implied b. ~1892 — 4 household members
| Surname | Dwyer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Occupation | Glass Cutter |
| Class of Worker | PW |
| Income (1939) | 800 |
| Highest Grade | C 3 |
| 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 John Dwyer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Dwyer
Head · 1940 · age 48 · b. ~1892 · 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01193-00557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Benton Davis | 70 | Head | Bookkeeper | Iowa |
| 2 | Loretta Davis | 60 | Wife | — | Iowa |
| 3 | Clare Louise Davis | 27 | Daughter | — | Iowa |
| 4 | Ethel Hamilton | 59 | Sister | Teacher | New York |
| 5 | Thomas Wood | 43 | Head | President | Iowa |
| 6 | Genevieve Wood | 40 | Wife | — | Colorado |
| 7 | Thomas P. Wood | 18 | Son | — | Iowa |
| 8 | Carol Wood | 17 | Daughter | — | Iowa |
| 9 | Roland Townsend | 40 | Head | Operator | California |
| 10 | Hazel Townsend | 39 | Wife | — | Iowa |
| 11 | Bernadine Townsend | 17 | Daughter | — | Iowa |
| 12 | Louis Rodeneom | 50 | Head | Express Messenger | Iowa |
| 13 | Josephine Rodeneom | 50 | Wife | — | Michigan |
| 14 | Margaret Rodeneom | 19 | Daughter | — | Iowa |
| 15 | Felix Tamari | 24 | Head | Price Clerk | Iowa |
| 16 | Veda Tamari | 21 | Wife | — | Iowa |
| 17 | George B. Hepburn | 72 | Head | Retired | Iowa |
| 18 | Jessie B. Hepburn | 71 | Wife | — | Iowa |
| 19 | Frank Force | 64 | Head | Office Work | New York |
| 20 | Inez Force | 54 | Wife | — | New York |
| 21 | Velma Force | 27 | Daughter | Teacher | New York |
| 22 | Essa Hagan | 61 | Head | Manager | Missouri |
| 23 | Ethel Hagan | 50 | Wife | — | Iowa |
| 24 | John C. Heck | 81 | Father-in-law | — | Germany |
| 25 | Dwight Brokey | 25 | Head | Salesman | Iowa |
| 26 | Claire Brokey | 22 | Wife | — | Iowa |
| 27 | Raymond Brokey | 58 | Brother | Office Work | Iowa |
| 28 | John Dwyer THIS PERSON | 48 | Head | Glass Cutter | Iowa |
| 29 | Alice Dwyer | 43 | Wife | — | Wisconsin |
| 30 | John Richard Dwyer | 20 | Son | — | Iowa |
| 31 | James Dwyer | 10 | Son | — | Iowa |
| 32 | Richard Swords | 62 | Head | Salesman | Missouri |
| 33 | Anna Swords | 47 | Wife | — | Illinois |
| 34 | Evelyn Swords | 21 | Daughter | Nurse | Missouri |
| 35 | Margaret Swords | 19 | Daughter | — | Missouri |
| 36 | Charlotte Swords | 11 | Daughter | — | Missouri |
| 37 | Richard Swords | 7 | Son | — | Missouri |
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)