WM
William Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cambria-County, Pennsylvania
Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in Cambria-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cambria-County, Pennsylvania |
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hogetown |
| 1935 Residence (County) | Cambria |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Hogetown |
| Est. Birth Year | ~1928 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mcdermott | Spouse | — | 36 | ~1904 |
| William Mcdermott | Son | — | 12 | ~1928 |
| Martha Mcdermott | Daughter | — | 1 | ~1939 |
| Carl Mcdermott | Son | — | 16 | ~1924 |
| James Mcdermott | Son | — | 8 | ~1932 |
| Martha Mcdermott | Other | — | 68 | ~1872 |
| James Mcdermott | Head | — | 42 | ~1898 |
Census Appearances
1930
Cambria, Pennsylvania
Son, age 2
Cambria, Pennsylvania · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | New York |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Cambria-County, Pennsylvania
Son, age 12
Cambria-County, Pennsylvania · implied b. ~1928 — 7 household members
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hogetown |
| 1935 Residence (County) | Cambria |
| Highest Grade | 7 |
| 1935 Residence | Same House |
| 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 Mcdermott across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcdermott
Son · 1940 · age 12 · b. ~1928 · Pennsylvania
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Sibling
Martha Mcdermott
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Mcdermott
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcdermott
Sibling · 1940 · age 8
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 — Cambria-County, Pennsylvania
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1940 US Federal Census — Cambria-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03452-00230)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Mcdermott | 42 | Head | Electrician | Pennsylvania |
| 42 | Margaret Mcdermott | 36 | Wife | — | Pennsylvania |
| 43 | Carl Mcdermott | 16 | Son | — | Pennsylvania |
| 44 | William Mcdermott THIS PERSON | 12 | Son | — | Pennsylvania |
| 45 | James Jr. Mcdermott | 8 | Son | — | Pennsylvania |
| 46 | Martha Jane Mcdermott | 1 | Daughter | — | Pennsylvania |
| 47 | Martha Mcdermott | 68 | Mother | — | Pennsylvania |
| 48 | Ray Patterson | 34 | Head | Laborer | Pennsylvania |
| 49 | Dorothy Patterson | 29 | Wife | — | Pennsylvania |
| 50 | Ray Jr. Patterson | 11 | Son | — | Pennsylvania |
| 51 | Richard Patterson | 9 | Son | — | Pennsylvania |
| 52 | Lillian Patterson | 7 | Daughter | — | Pennsylvania |
| 53 | Marcella Patterson | 3 | Daughter | — | Pennsylvania |
| 54 | Elmer Baynes | 54 | Head | Laborer | Pennsylvania |
| 55 | Elizabeth Baynes | 49 | Wife | — | Pennsylvania |
| 56 | Albert Baynes | 28 | Son | Salesman | Pennsylvania |
| 57 | Ralph Baynes | 21 | Son | Truck Driver | Pennsylvania |
| 58 | Norman Baynes | 19 | Son | Laborer | Pennsylvania |
| 59 | Rita Baynes | 17 | Daughter | Housework | Pennsylvania |
| 60 | Walter Baynes | 15 | Son | — | Pennsylvania |
| 61 | Kathleen Baynes | 11 | Daughter | — | Pennsylvania |
| 62 | Mary R. Baynes | 9 | Daughter | — | Pennsylvania |
| 63 | Donald Baynes | 7 | Son | — | Pennsylvania |
| 64 | James Baes | 60 | Head | Laborer | Pennsylvania |
| 65 | Earl Baes | 25 | Son | Laborer | Pennsylvania |
| 66 | Jane W. Baes | 23 | Son | Attendant | Pennsylvania |
| 67 | Woodrow Baes | 21 | Son | Farm Worker | Pennsylvania |
| 68 | Wilford Baes | 19 | Son | Attendant | Pennsylvania |
| 69 | Charles Hogue | 52 | Head | Clerk | Pennsylvania |
| 70 | Mary Hogue | 43 | Wife | — | Pennsylvania |
| 71 | Eli G. Bard | 22 | Head | Painter | Pennsylvania |
| 72 | Mary Bard | 24 | Wife | — | Pennsylvania |
| 73 | David L. Williamson | 51 | Head | Derrick Operator | Pennsylvania |
| 74 | Edna Williamson | 46 | Wife | — | Pennsylvania |
| 75 | Mary L. Williamson | 18 | Daughter | — | Pennsylvania |
| 76 | David Jr. Williamson | 14 | Son | — | Pennsylvania |
| 77 | Betty Williamson | 11 | Daughter | — | Pennsylvania |
| 78 | Shirley Williamson | 7 | Daughter | — | Pennsylvania |
| 79 | Newton Hines | 30 | Son-in-law | Helper | Pennsylvania |
| 80 | Eva Hines | 27 | Daughter | Seamstress | 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)