WM
William Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this William Mccormick across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 17-person household.
Age 26
b. ~1914
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Service man |
| Industry | Oil Burner |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 336 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Service Man |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1914 |
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.
17 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| James Lutz | Other | — | 73 | ~1867 |
| Samuel Montgomery | Other | — | 30 | ~1910 |
| Rita Bievle | Other | — | 26 | ~1914 |
| Theodore Eslaner | Son | — | 24 | ~1916 |
| Following Miller | Other | — | — | |
| John Erossing | Son | — | 16 | ~1924 |
| John Katselas | Other | — | 46 | ~1894 |
| Robert Bievle | Other | — | 33 | ~1907 |
| William Walden | Son | — | 22 | ~1918 |
| Lena Eslaner | Spouse | — | 53 | ~1887 |
| Ida Eslaner | Daughter | — | 25 | ~1915 |
| Ernest Cascarino | Other | — | 20 | ~1920 |
| Rose Weston | Daughter | — | 42 | ~1898 |
| Margaret Kister | Daughter | — | 32 | ~1908 |
| Rita Bievle | Other | — | ~1940 | |
| William Mccormick | Son | — | 26 | ~1914 |
| Lawrence Cascarino | Other | — | 17 | ~1923 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 16
Philadelphia, Pennsylvania · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Pressman |
| Industry | Rubber Manuf. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 26
Philadelphia-County, Pennsylvania · implied b. ~1914 — 17 household members
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Service man |
| Industry | Oil Burner |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 336 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 26 · b. ~1914 · Pennsylvania
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Sibling
Theodore Eslaner
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Kister
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Walden
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Erossing
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Weston
Sibling · 1940 · age 42
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ida Eslaner
Sibling · 1940 · age 25
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03725-00684)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Following Miller | None | Persons | — | — |
| 2 | John Erossing | 16 | Son | Helper | Pennsylvania |
| 3 | John Katselas | 46 | Lodger | Cook | Greece |
| 4 | Ernest Cascarino | 20 | Brother | Machinist | Pennsylvania |
| 5 | Lawrence Cascarino | 17 | Brother | — | Pennsylvania |
| 6 | Rita Bievle | 26 | Sister | — | Pennsylvania |
| 7 | Robert Bievle | 33 | Brother-in-law | Printer | Pennsylvania |
| 8 | Rita Bievle | 0 | Niece | — | Pennsylvania |
| 9 | Lena Eslaner | 53 | Wife | — | Poland |
| 10 | Ida Eslaner | 25 | Daughter | Sales Girl | New York |
| 11 | Theodore Eslaner | 24 | Son | Sales Man | New York |
| 12 | Following | None | Persons | — | — |
| 13 | William Walden | 22 | Son | Stock Man | Pennsylvania |
| 14 | James Lutz | 73 | Father | Marine Engineer | Pennsylvania |
| 15 | Rose Weston | 42 | Daughter | — | Pennsylvania |
| 16 | Samuel Montgomery | 30 | Brother | Printer | Pennsylvania |
| 17 | William Mccormick THIS PERSON | 26 | Son | Service Man | Pennsylvania |
| 18 | Margaret Kister | 32 | Daughter | Clerk | Pennsylvania |
| 19 | Gerald Taylor | 38 | Head | Truck Driver | Pennsylvania |
| 20 | Laura A. Taylor | 32 | Wife | Cashier | Pennsylvania |
| 21 | Catherine Taylor | 9 | Daughter | — | Pennsylvania |
| 22 | Frances Taylor | 8 | Daughter | — | Pennsylvania |
| 23 | Phillip Mason | 41 | Lodger | Clerk | Pennsylvania |
| 24 | Following | None | Persons | — | — |
| 25 | Goldfield | 20 | Son | Mechanic | Pennsylvania |
| 26 | David Goldfield | 19 | Son | New Worker | Pennsylvania |
| 27 | Anna Cucotello | 24 | Daughter | — | Pennsylvania |
| 28 | Agnes Thornton | 32 | Lodger | House Work | Pennsylvania |
| 29 | Morris Oxley | 29 | Son | Medical Doctor | Pennsylvania |
| 30 | Sylvia Silver | 23 | Daughter | Book Keeper | Pennsylvania |
| 31 | Sidney Silver | 24 | Son-in-law | Postal Clerk | New Jersey |
| 32 | Norma Davis | 9 | Daughter | — | Pennsylvania |
| 33 | Samuel Lasko | 45 | Head | Baker | Pennsylvania |
| 34 | Lillian Lasko | 43 | Wife | — | Pennsylvania |
| 35 | Leonard Lasko | 17 | Son | — | Pennsylvania |
| 36 | Betty Lasko | 15 | Daughter | — | Pennsylvania |
| 37 | Margaret Casa | 50 | Head | Attendant | Pennsylvania |
| 38 | Martin O'Brien | 42 | Lodger | Machinist | Pennsylvania |
| 39 | Frank Armstrong | 52 | Lodger | Janitor | Pennsylvania |
| 40 | Thomas Ward | 34 | Lodger | Cook | Pennsylvania |
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)