WM
William Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dane-County, Wisconsin
Our Model Tree links this William Mccormick across the 1930 and 1940 US Censuses in Dane-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Dane-County, Wisconsin |
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Madison city |
| 1935 Residence (County) | Dane |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Madison City |
| Est. Birth Year | ~1930 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Lucile Mccormick | Spouse | — | 42 | ~1898 |
| James Mccormick | Son | — | 18 | ~1922 |
| Rosanna Mccormick | Daughter | — | 11 | ~1929 |
| William Mccormick | Son | — | 10 | ~1930 |
| Michael Mccormick | Son | — | 5 | ~1935 |
| Gregory Mccormick | Head | — | 42 | ~1898 |
| Marilyn Mccormick | Daughter | — | 8 | ~1932 |
| Kirkpatrick Mccormick | Son | — | 16 | ~1924 |
Census Appearances
1930
Dane, Wisconsin
Son, age
Dane, Wisconsin · implied b. ~1930 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Dane-County, Wisconsin
Son, age 10
Dane-County, Wisconsin · implied b. ~1930 — 8 household members
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Madison city |
| 1935 Residence (County) | Dane |
| Income (1939) | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Mccormick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mccormick
Son · 1940 · age 10 · b. ~1930 · Wisconsin
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Sibling
Marilyn Mccormick
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Mccormick
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosanna Mccormick
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mccormick
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kirkpatrick Mccormick
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dane-County, Wisconsin
Open full size
1940 US Federal Census — Dane-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04469-01064)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bart Swan | 44 | Head | Bldg Contractor | Wisconsin |
| 2 | Helen Swan | 45 | Wife | — | Wisconsin |
| 3 | Richard Swan | 17 | Son | — | Wisconsin |
| 4 | Robert Swan | 16 | Son | — | Wisconsin |
| 5 | Simon Harman | 51 | Head | Fishing Guide | Iowa |
| 6 | Elizabeth Harman | 51 | Wife | Typist | Iowa |
| 7 | Gregory Mccormick | 42 | Head | Retail Yard | Wisconsin |
| 8 | Lucile Mccormick | 42 | Wife | — | Wisconsin |
| 9 | James Mccormick | 18 | Son | — | Wisconsin |
| 10 | Kirkpatrick Mccormick | 16 | Son | — | Wisconsin |
| 11 | Rosanna Mccormick | 11 | Daughter | — | Wisconsin |
| 12 | William Mccormick THIS PERSON | 10 | Son | — | Wisconsin |
| 13 | Marilyn Mccormick | 8 | Daughter | — | Wisconsin |
| 14 | Michael Mccormick | 5 | Son | — | Wisconsin |
| 15 | Fred Myhre | 34 | Head | Acc'T | Wisconsin |
| 16 | Anne Myhre | 34 | Wife | — | Austria |
| 17 | James Myhre | 11 | Son | — | Wisconsin |
| 18 | Gwendolyn Myhre | 5 | Daughter | — | Wisconsin |
| 19 | Dona Myhre | 3 | Daughter | — | Wisconsin |
| 20 | Ray Travers | 47 | Head | Oil Co. | Illinois |
| 21 | Gara Travers | 52 | Wife | — | Wisconsin |
| 22 | Edwin Johnston | 43 | Head | Salesman | Iowa |
| 23 | Thyra Johnston | 37 | Wife | Stenographer | Michigan |
| 24 | Julia Johnston | 9 | Daughter | — | Minnesota |
| 25 | Edwin Johnston | 7 | Son | — | Wisconsin |
| 26 | Charlotte Dolezalek | 18 | Servant | Servant | No. Carolina |
| 27 | Joseph Zeman | 55 | Head | Salesman | Wisconsin |
| 28 | Emma Zeman | 52 | Wife | — | Iowa |
| 29 | Charles Shattuck | 51 | Head | Dentist | Minnesota |
| 30 | Mary Shattuck | 40 | Wife | — | Wisconsin |
| 31 | Harry Holcombe | 39 | Head | Ass'T Supervisor | Wisconsin |
| 32 | Mary Holcombe | 37 | Wife | Inspector | Wisconsin |
| 33 | William Fraser | 43 | Head | Salesman | Illinois |
| 34 | Margaret Fraser | 40 | Wife | — | Indiana |
| 35 | Keith Astall | 51 | Head | Civil Eng | Wisconsin |
| 36 | Mary L Astall | 49 | Wife | — | Minnesota |
| 37 | Olav Bollingberg | 51 | Head | — | Norway |
| 38 | Anita Bollingberg | 49 | Wife | — | Norway |
| 39 | Arthur Osborne | 45 | Head | Inspector | Wisconsin |
| 40 | Dorothy Osborne | 46 | Wife | — | Wisconsin |
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)