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William Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Milwaukee-County, Wisconsin
Our Model Tree links this William Farrell across the 1930 and 1940 US Censuses in Milwaukee-County, Wisconsin (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 11-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Milwaukee-County, Wisconsin |
| Surname | Farrell |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Racine |
| 1935 Residence (County) | Racine |
| Additional Details | |
| Occupation | Machinist |
| Industry | Oil Gear Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 840 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machinist |
| Township / Ward | Milwaukee |
| Est. Birth Year | ~1898 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| James Farrell | Son | — | 6 | ~1934 |
| Ruth Farrell | Daughter | — | 14 | ~1926 |
| Nancy Farrell | Daughter | — | 2 | ~1938 |
| Gerald Farrell | Son | — | 5 | ~1935 |
| William Farrell | Son | — | 11 | ~1929 |
| William Farrell | Head | — | 42 | ~1898 |
| Bruce Farrell | Daughter | — | 12 | ~1928 |
| Daniel Farrell | Son | — | 3 | ~1937 |
| Margaret Farrell | Daughter | — | 8 | ~1932 |
| Anne Kempen | Other | — | 76 | ~1864 |
| Esther Farrell | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Racine, Wisconsin
Head, age 32
Racine, Wisconsin · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | William E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | United States |
| Mother's Birthplace | United States |
| Occupation | Machinist |
| Industry | Tractor Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Milwaukee-County, Wisconsin
Head, age 42
Milwaukee-County, Wisconsin · implied b. ~1898 — 11 household members
| Surname | Farrell |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Racine |
| 1935 Residence (County) | Racine |
| Occupation | Machinist |
| Industry | Oil Gear Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 840 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Farrell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Farrell
Head · 1940 · age 42 · b. ~1898 · Wisconsin
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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 — Milwaukee-County, Wisconsin
Open full size
1940 US Federal Census — Milwaukee-County, Wisconsin
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04556-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marilyn Siemert | 1 | Daughter | — | Wisconsin |
| 42 | Martha Gappa | 73 | Head | — | Germany |
| 43 | James O'Connell | 41 | Son-in-law | Attendant | Wisconsin |
| 44 | Regina O'Connell | 42 | Daughter | — | Wisconsin |
| 45 | Mabel O'Connell | 19 | Granddaughter | New Worker | Wisconsin |
| 46 | Robert O'Connell | 17 | Grandson | — | Wisconsin |
| 47 | Edward Oity | 22 | Lodger | Machinist | No. Dakota |
| 48 | Louis Moracek | 16 | Lodger | Paper Route | Wisconsin |
| 49 | Robert Nash | 15 | Lodger | — | Wisconsin |
| 50 | Frank Millonig | 48 | Head | Cabinet Maker | Austria |
| 51 | Alma Millonig | 39 | Wife | Housewife | Wisconsin |
| 52 | Alma H Millonig | 21 | Daughter | Student Nurse | Wisconsin |
| 53 | Virginia Millonig | 12 | Daughter | — | Wisconsin |
| 54 | John Millonig | 52 | Brother | Farm Hand | Austria |
| 55 | Mason Fox | 65 | Head | Conductor | Ohio |
| 56 | Laura Fox | 63 | Wife | — | Wisconsin |
| 57 | Erwin Finkler | 44 | Head | Clerical | Wisconsin |
| 58 | Emma Finkler | 40 | Wife | — | Wisconsin |
| 59 | Clarence Finkler | 20 | Son | Clerk | Wisconsin |
| 60 | Edward Finkler | 19 | Son | C.C.C. | Wisconsin |
| 61 | Evelyn Finkler | 15 | Daughter | — | Wisconsin |
| 62 | Louis Finkler | 12 | Son | — | Wisconsin |
| 63 | Betty Ann Finkler | 11 | Daughter | — | Illinois |
| 64 | Mabel Finkler | 8 | Daughter | — | Wisconsin |
| 65 | Irving Finkler | 4 | Son | — | Wisconsin |
| 66 | Russell Finkler | 2 | Son | — | Wisconsin |
| 67 | Minnie Finkler | 57 | Mother | New Worker | Germany |
| 68 | William Farrell THIS PERSON | 42 | Head | Machinist | Illinois |
| 69 | Esther Farrell | 36 | Wife | Housewife | Wisconsin |
| 70 | Ruth Farrell | 14 | Daughter | — | Indiana |
| 71 | Bruce Farrell | 12 | Daughter | — | Wisconsin |
| 72 | William Jr. Farrell | 11 | Son | — | Wisconsin |
| 73 | Margaret Farrell | 8 | Daughter | — | Wisconsin |
| 74 | James Farrell | 6 | Son | — | Wisconsin |
| 75 | Gerald Farrell | 5 | Son | — | Wisconsin |
| 76 | Daniel Farrell | 3 | Son | — | Wisconsin |
| 77 | Nancy Farrell | 2 | Daughter | — | Wisconsin |
| 78 | Anne Kempen | 76 | Mother | Housewife | Wisconsin |
| 79 | John Hacker | 54 | Head | Stone Cutter | Germany |
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)