WM
William Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clinton-County, Pennsylvania
Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in Clinton-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 11-person household.
Age 11
b. ~1929
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Pennsylvania |
| Surname | McDermott |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Queen's Run |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Queens Run |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| William Mcdermott | Son | — | 11 | ~1929 |
| Linda Mcdermott | Daughter | — | 26 | ~1914 |
| James Mcdermott | Son | — | 17 | ~1923 |
| George Mcdermott | Head | — | 56 | ~1884 |
| Robert Mcdermott | Son | — | 9 | ~1931 |
| Florence Mcdermott | Spouse | — | 42 | ~1898 |
| Shirley Mcdermott | Daughter | — | 6 | ~1934 |
| John Mcdermott | Son | — | 8 | ~1932 |
| Arthur Mcdermott | Son | — | 20 | ~1920 |
| Lewis Mcdermott | Son | — | 15 | ~1925 |
| Ida Mcdermott | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Clinton, Pennsylvania
Son, age 1
Clinton, Pennsylvania · implied b. ~1929 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermit |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Clinton-County, Pennsylvania
Son, age 11
Clinton-County, Pennsylvania · implied b. ~1929 — 11 household members
| Surname | McDermott |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Queen's Run |
| 1935 Residence (County) | Clinton |
| Highest Grade | 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 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 11 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
Ida Mcdermott
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcdermott
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Linda Mcdermott
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcdermott
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Mcdermott
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcdermott
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Mcdermott
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lewis Mcdermott
Sibling · 1940 · age 15
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 — Clinton-County, Pennsylvania
Open full size
1940 US Federal Census — Clinton-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03472-00201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William E. Croak | 23 | Son | New Worker | Pennsylvania |
| 42 | Geraldine J. Croak | 20 | Daughter | Dish Washer | Pennsylvania |
| 43 | Kenneth L. Croak | 19 | Son | Welder | Pennsylvania |
| 44 | Ethel M. Croak | 18 | Daughter | — | Pennsylvania |
| 45 | Warren D. Croak | 15 | Son | — | Pennsylvania |
| 46 | Evelyn H. Croak | 12 | Daughter | — | Pennsylvania |
| 47 | Nancy C. Croak | 10 | Daughter | — | Pennsylvania |
| 48 | Luretta J. Croak | 7 | Daughter | — | Pennsylvania |
| 49 | Larry E. Croak | 5 | Son | — | Pennsylvania |
| 50 | Clair G. Croak | 21 | Son | Trackman | Pennsylvania |
| 51 | Sara E. Croak | 22 | Daughter-in-law | — | Pennsylvania |
| 52 | Teddy L. Croak | 0 | Grand-son | — | Pennsylvania |
| 53 | Claude E. Mcdermott | 28 | Head | Shipping Clerk | Pennsylvania |
| 54 | Myrtle V. Mcdermott | 28 | Wife | — | Pennsylvania |
| 55 | Claude E. Jr. Mcdermott | 9 | Son | — | Pennsylvania |
| 56 | Mae M. Mcdermott | 8 | Daughter | — | Pennsylvania |
| 57 | George W. Mcdermott | 56 | Head | Clay Miner | Pennsylvania |
| 58 | Florence M. Mcdermott | 42 | Wife | — | Pennsylvania |
| 59 | Linda Mcdermott | 26 | Daughter | — | Pennsylvania |
| 60 | Arthur Mcdermott | 20 | Son | Painter | Pennsylvania |
| 61 | James Mcdermott | 17 | Son | Automobile Mechanic | Pennsylvania |
| 62 | Lewis W. Mcdermott | 15 | Son | — | Pennsylvania |
| 63 | Ida E. Mcdermott | 13 | Daughter | — | Pennsylvania |
| 64 | William L. Mcdermott THIS PERSON | 11 | Son | — | Pennsylvania |
| 65 | Robert A. Mcdermott | 9 | Son | — | Pennsylvania |
| 66 | John Mcdermott | 8 | Son | — | Pennsylvania |
| 67 | Shirley Mcdermott | 6 | Daughter | — | Pennsylvania |
| 68 | Charles Lisenmuth | 54 | Head | Clay Miner | Pennsylvania |
| 69 | John A. Fox | 33 | Head | Minister | Pennsylvania |
| 70 | Guy E. Allen | 24 | Head | Server | Pennsylvania |
| 71 | E. Geraldine Allen | 21 | Wife | — | Pennsylvania |
| 72 | Beverly E. Allen | 5 | Daughter | — | Pennsylvania |
| 73 | Gulia L. Allen | 2 | Daughter | — | Pennsylvania |
| 74 | Raymond S. Connelly | 43 | Head | Clay Miner | Pennsylvania |
| 75 | Anna E. Connelly | 29 | Wife | — | Pennsylvania |
| 76 | Elizabeth L. Connelly | 10 | Daughter | — | Pennsylvania |
| 77 | Charles W. Connelly | 7 | Son | — | Pennsylvania |
| 78 | John D. Connelly | 1 | Son | — | 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)