WM
William Mcdermott — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richmond-County, New York
Our Model Tree links this William Mcdermott across the 1930 and 1940 US Censuses in Richmond-County, New York (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Richmond-County, New York |
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | A.D. 1 |
| 1935 Residence (County) | Richmond |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Ad 1 |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Anne Mcdermott | Daughter | — | 2 | ~1938 |
| Frances Mcdermott | Spouse | — | 32 | ~1908 |
| Peter Mcdermott | Son | — | 6 | ~1934 |
| William Mcdermott | Son | — | 10 | ~1930 |
| Elizabeth Mcdermott | Daughter | — | 15 | ~1925 |
| Mary Mcdermott | Daughter | — | 12 | ~1928 |
| George Mcdermott | Head | — | 42 | ~1898 |
| George Mcdermott | Son | — | 19 | ~1921 |
| Thomas Mcdermott | Son | — | 8 | ~1932 |
Census Appearances
1930
Richmond, New …
Son, age
Richmond, New York · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Richmond-County, New …
Son, age 10
Richmond-County, New York · implied b. ~1930 — 9 household members
| Surname | McDermott |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | A.D. 1 |
| 1935 Residence (County) | Richmond |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 10 · b. ~1930 · New York
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Sibling
Anne Mcdermott
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mcdermott
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcdermott
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Mcdermott
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mcdermott
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdermott
Sibling · 1940 · age 12
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 — Richmond-County, New York
Open full size
1940 US Federal Census — Richmond-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02760-00742)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert W. Goddard | 73 | lodger | Chiropractor | New York |
| 42 | Louis Raichle | 61 | head | Brewer | Germany |
| 43 | Ann A. Raichle | 60 | wife | — | New York |
| 44 | Anna M. Raichle | 41 | daughter | School Teacher | New York |
| 45 | Katherine Plosser | 58 | sister-in-law | — | New York |
| 46 | Raymond F. Hendrickson | 54 | head | — | New York |
| 47 | Maradell Hendrickson | 45 | wife | Bookkeeper | New York |
| 48 | Julius Fitchmuller | 38 | head | Chemist | New York |
| 49 | Margaret Fitchmuller | 32 | wife | None | New York |
| 50 | Louis C. Raichle | 31 | head | Language Teacher | New York |
| 51 | Florence M. Raichle | 30 | wife | — | Connecticut |
| 52 | Louis A. Raichle | 3 | son | — | New York |
| 53 | George J. Mcdermott | 42 | head | Automobile Dealer | New York |
| 54 | Frances W. Mcdermott | 32 | wife | — | Connecticut |
| 55 | George C. Mcdermott | 19 | son | — | New York |
| 56 | Elizabeth Mcdermott | 15 | daughter | — | New York |
| 57 | Mary Mcdermott | 12 | daughter | — | New York |
| 58 | William Mcdermott THIS PERSON | 10 | son | — | New York |
| 59 | Thomas Mcdermott | 8 | son | — | New York |
| 60 | Peter Mcdermott | 6 | son | — | New York |
| 61 | Anne Marie Mcdermott | 2 | daughter | — | New York |
| 62 | George T. Robinson | 43 | head | Manager | New York |
| 63 | Elsie W. Robinson | 41 | wife | — | Belgium |
| 64 | Joyce Robinson | 14 | daughter | — | New York |
| 65 | George T. Robinson | 11 | son | — | New York |
| 66 | Harold J. Robinson | 1 | son | — | New York |
| 67 | William Tappen | 44 | head | Steamship Checker | New York |
| 68 | Loretta A. Tappen | 42 | wife | — | New York |
| 69 | Margaret M. Wheeler | 48 | head | — | New York |
| 70 | Mary C. Wheeler | 22 | daughter | Stenographer | New York |
| 71 | Fred Rehm | 42 | head | Truck Driver | New York |
| 72 | Helen M. Rehm | 35 | wife | — | New York |
| 73 | Fred J. Rehm | 15 | son | — | New York |
| 74 | Angelo Morano | 62 | head | Laborer | Italy |
| 75 | Madeline Morano | 52 | wife | — | Italy |
| 76 | Louise Morano | 27 | daughter | Stenographer | New York |
| 77 | Edgar A. Young | 54 | head | Bricklayer | New York |
| 78 | Minnie R. Young | 48 | wife | — | Pennsylvania |
| 79 | Alton E. Young | 12 | son | — | Pennsylvania |
| 80 | Warren Tierney | 40 | head | Machinist | New York |
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)