WC
William Conner — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grant-County, South Dakota
Our Model Tree links this William Conner across the 1930 and 1940 US Censuses in Grant-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1901), then head of a 6-person household.
Age 39
b. ~1901
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Grant-County, South Dakota |
| Surname | Conner |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Milbank city |
| 1935 Residence (County) | Grant |
| Additional Details | |
| Occupation | tractor driver |
| Industry | county road construction |
| Class of Worker | GW |
| Income (1939) | 1200 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Tractor Driver |
| Township / Ward | Milbank City |
| Est. Birth Year | ~1901 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Goldie Conner | Spouse | — | 35 | ~1905 |
| William Conner | Son | — | 11 | ~1929 |
| William Conner | Head | — | 39 | ~1901 |
| Helen Conner | Daughter | — | 7 | ~1933 |
| Donna Conner | Daughter | — | 9 | ~1931 |
| Myrtle Conner | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Grant, South …
Head, age 29
Grant, South Dakota · implied b. ~1901
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Conner |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 28 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Iowa |
| Occupation | Roadmaster |
| Industry | For County |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Grant-County, South …
Head, age 39
Grant-County, South Dakota · implied b. ~1901 — 6 household members
| Surname | Conner |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Milbank city |
| 1935 Residence (County) | Grant |
| Occupation | tractor driver |
| Industry | county road construction |
| Class of Worker | GW |
| Income (1939) | 1200 |
| Highest Grade | 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 Conner across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Conner
Head · 1940 · age 39 · b. ~1901 · South Dakota
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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 — Grant-County, South Dakota
Open full size
1940 US Federal Census — Grant-County, South Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03856-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Angeline Adanek | 22 | Wife | — | South Dakota |
| 2 | Shirley Adanek | 2 | daughter | — | South Dakota |
| 3 | Felix Mathies | 26 | Head | Truck Driver | So. Dakota |
| 4 | Regina Mathies | 22 | wife | Waitress | So. Dakota |
| 5 | Martin T Lee | 62 | head | Well Driller | Minnesota |
| 6 | Anna Lee | 59 | wife | — | Minnesota |
| 7 | Quentin A. Lee | 20 | son | Well Driller Assistant | South Dakota |
| 8 | Nellie Holmes | 65 | head | — | Wisconsin |
| 9 | Leslie Holmes | 41 | son | Common Laborer | South Dakota |
| 10 | Vincent Schell | 45 | head | Common Laborer | South Dakota |
| 11 | Katherine Schell | 33 | wife | — | Iowa |
| 12 | Raymond Schell | 15 | son | — | South Dakota |
| 13 | Francis Schell | 13 | son | — | South Dakota |
| 14 | Florence Schell | 10 | daughter | — | South Dakota |
| 15 | William Schell | 9 | son | — | South Dakota |
| 16 | Vincent Schell | 6 | son | — | South Dakota |
| 17 | James Schell | 4 | son | — | South Dakota |
| 18 | Wayne Kennedy | 33 | head | Attendant | Iowa |
| 19 | Myra Kennedy | 38 | wife | — | So. Dakota |
| 20 | Yordell Kennedy | 9 | daughter | — | So. Dakota |
| 21 | Helen Jean Kennedy | 6 | daughter | — | So. Dakota |
| 22 | Robert N. Kennedy | 2 | son | — | So. Dakota |
| 23 | William Conner THIS PERSON | 39 | head | Tractor Driver | Iowa |
| 24 | Goldie Conner | 35 | wife | — | Iowa |
| 25 | Myrtle Conner | 13 | daughter | — | South Dakota |
| 26 | William Conner | 11 | son | — | South Dakota |
| 27 | Donna Conner | 9 | daughter | — | South Dakota |
| 28 | Helen Conner | 7 | daughter | — | South Dakota |
| 29 | Edward Carrier | 52 | head | Street Commissioner | Minnesota |
| 30 | Eva Carrier | 49 | wife | — | Minnesota |
| 31 | Arthur C Bucholz | 41 | head | Insurance Salesman | Minnesota |
| 32 | Edna Bucholz | 39 | wife | — | South Dakota |
| 33 | Renae C. Bucholz | 10 | daughter | — | South Dakota |
| 34 | Eloise M. Bucholz | 9 | daughter | — | South Dakota |
| 35 | A. Mark Bucholz | 6 | son | — | South Dakota |
| 36 | Fred Walz | 50 | head | Property Abstractor | Iowa |
| 37 | Helen Walz | 40 | wife | Book Keeper | Wisconsin |
| 38 | Dorothy Walz | 14 | daughter | — | South Dakota |
| 39 | John Walz | 10 | son | — | South Dakota |
| 40 | Myrtle Spande | 23 | lodger | Teacher | So. Dakota |
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)