WM
William Mckay — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Westchester-County, New York
Our Model Tree links this William Mckay across the 1930 and 1940 US Censuses in Westchester-County, New York (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westchester-County, New York |
| Surname | McKay |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New Rochelle City |
| 1935 Residence (County) | Westchester |
| Additional Details | |
| Industry | No |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New Rochelle City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Jacqueline Mckay | Daughter | — | 9 | ~1931 |
| William Mckay | Son | — | 11 | ~1929 |
| Howard Mckay | Son | — | 14 | ~1926 |
| Howard Mckay | Head | — | 40 | ~1900 |
| Bruce Mckay | Son | — | 8 | ~1932 |
| Ann Mckay | Spouse | — | 35 | ~1905 |
Census Appearances
1930
Westchester, New …
Son, age 1
Westchester, New York · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mackey |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Pennsylvania |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Westchester-County, New …
Son, age 11
Westchester-County, New York · implied b. ~1929 — 6 household members
| Surname | McKay |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New Rochelle City |
| 1935 Residence (County) | Westchester |
| Industry | No |
| Highest Grade | No 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 Mckay across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mckay
Son · 1940 · age 11 · b. ~1929 · New York
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Sibling
Bruce Mckay
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Mckay
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jacqueline Mckay
Sibling · 1940 · age 9
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 — Westchester-County, New York
Open full size
1940 US Federal Census — Westchester-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02809-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hans C Roethling | 3 | Son | — | New York |
| 2 | Thomas J Mangin | 46 | Head | Shipping Clerk | New York |
| 3 | Martha Q Mangin | 49 | Wife | — | New York |
| 4 | Edith Mangin | 19 | Daughter | — | New York |
| 5 | Gertrude Mangin | 18 | Daughter | — | New York |
| 6 | Howard Mckay | 40 | Head | Rigger | New York |
| 7 | Ann Q Mckay | 35 | Wife | — | New York |
| 8 | Howard Mckay | 14 | Son | — | New York |
| 9 | William Mckay THIS PERSON | 11 | Son | — | New York |
| 10 | Jacqueline Mckay | 9 | Daughter | — | New York |
| 11 | Bruce Mckay | 8 | Son | — | New York |
| 12 | Albert Werner | 42 | Head | Truck Driver | New York |
| 13 | Florence Q Werner | 39 | Wife | — | New York |
| 14 | Betty Werner | 19 | Daughter | Private Secretary | New York |
| 15 | Lucille Werner | 13 | Daughter | — | New York |
| 16 | William Werner | 11 | Son | — | New York |
| 17 | Rose A Q Chasse | 71 | Head | — | New York |
| 18 | John Chasse | 36 | Son | Chauffeur | New York |
| 19 | George Anderson | 45 | Head | Painter | Scotland |
| 20 | Jean R Anderson | 46 | Wife | — | Scotland |
| 21 | Peter Anderson | 14 | Son | — | New York |
| 22 | Jean Anderson | 11 | Daughter | — | New York |
| 23 | Margaret Anderson | 7 | Daughter | — | New York |
| 24 | Walter Johnson | 32 | Head | Painter | Sweden |
| 25 | Bridget Q Johnson | 34 | Wife | — | Newfoundland |
| 26 | Joseph Q Poscruite | 43 | Head | Superintendent | New York |
| 27 | Frances Poscruite | 45 | Wife | — | England |
| 28 | John Spiegler | 47 | Head | Custodian | New York |
| 29 | Bertha Q Spiegler | 41 | Wife | — | New York |
| 30 | Bertha Spiegler | 13 | Daughter | — | New York |
| 31 | Mary Spiegler | 10 | Daughter | — | New York |
| 32 | Margaret Spiegler | 8 | Daughter | — | New York |
| 33 | Anthony Spiegler | 6 | Son | — | New York |
| 34 | Frank Q Williams | 30 | Head | Painter | New York |
| 35 | Margaret Williams | 29 | Wife | — | New York |
| 36 | Henry Williams | 11 | Son | — | New York |
| 37 | Allen Williams | 9 | Son | — | New York |
| 38 | Roy Williams | 8 | Son | — | New York |
| 39 | Joseph Q Nocerato | 46 | Head | Chauffeur-Mechanic | Italy |
| 40 | Winifred Nocerato | 40 | Wife | — | Kentucky |
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)