WM
William Mccoy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this William Mccoy across the 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed), with identified parents William & Mary — first a son (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | McCoy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| Additional Details | |
| Occupation | Detective |
| Industry | Police Dept |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 3000 |
| Highest Grade | H 4 |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Detective |
| Township / Ward | New York City |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mccoy | Son | — | 30 | ~1910 |
| Alfred Mccoy | Head | — | 61 | ~1879 |
| Juliet Mccoy | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Bronx, New …
Son, age 10
Bronx, New York · implied b. ~1910 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Bronx, New …
Son, age 20
Bronx, New York · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Clerk |
| Industry | Wholesale |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Bronx-County, New …
Son, age 30
Bronx-County, New York · implied b. ~1910 — 3 household members
| Surname | McCoy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| Occupation | Detective |
| Industry | Police Dept |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 3000 |
| Highest Grade | H 4 |
| 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 Mccoy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Mccoy (~0.81 confidence) and mother Mary Mccoy (~0.81 confidence) and father Alfred Mccoy (~0.92 confidence) and mother Juliet Mccoy (~0.92 confidence) and mother Juliet Mccoy (~0.92 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
William Mccoy
b. ~1846
Source father>father
● Household
· direct · ~0.81
Mother
Mary Mccoy
b. ~1850
Source father>mother
● Household
· direct · ~0.81
Father
Alfred Mccoy
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Juliet Mccoy
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Juliet Mccoy
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mccoy
Son · 1940 · age 30 · b. ~1910 · New York
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02467-00818)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Stevenson | 4 | Head | — | New York |
| 2 | Sam Pister | 30 | Head | Furrier | Roumania |
| 3 | Rose Pister | 28 | Wife | — | Roumania |
| 4 | Carole Pister | 2 | Daughter | — | New York |
| 5 | Gwen Pister | 0 | Son | — | New York |
| 6 | Leon Piper | 59 | Father-in-law | — | Roumania |
| 7 | Roselia Piper | 56 | Mother-in-law | — | Roumania |
| 8 | Ida Piper | 20 | Sister-in-law | Helper | Austria |
| 9 | Frank O. Johnson | 47 | Head | Accountant | New York |
| 10 | Frieda Johnson | 51 | Wife | — | New York |
| 11 | Dorothy G. Johnson | 24 | Daughter | Typist | New York |
| 12 | Paul Meszaro | 56 | Head | Mill Wright | Hungary |
| 13 | Helen Meszaro | 53 | Wife | — | Hungary |
| 14 | August Kellenberger | 37 | Brother-in-law | Jr. Foreman | Switzerland |
| 15 | Irene Kellenberger | 30 | Daughter | — | New York |
| 16 | Joseph Mcconney | 52 | Head | Clerk | Barbados B.W.I. |
| 17 | Rose Mcconney | 50 | Wife | — | Barbados B.W.I. |
| 18 | Noel Phillips | 24 | Step son | Inspector | New York |
| 19 | Henderson Phillips | 21 | Step son | Clerk | New York |
| 20 | Ruby Phillips | 19 | Step daughter | Typist | England |
| 21 | William C. Brinta | 58 | Head | — | Scotland |
| 22 | Gertrude Brinta | 48 | Wife | — | Bermuda |
| 23 | Thomas Mccook | 47 | Head | Chauffeur | New York |
| 24 | Ruth Mccook | 47 | Wife | — | New York |
| 25 | Gerard Mccook | 18 | Son | Stock Clerk | New York |
| 26 | George Mccook | 16 | Son | — | New York |
| 27 | Alfred E. Mccoy | 61 | Head | Ins. Underwriter | New York |
| 28 | Juliet V. Mccoy | 57 | Wife | — | New York |
| 29 | William Mccoy THIS PERSON | 30 | Son | Detective | New York |
| 30 | Wrong Information Just Three In The Family | None | — | — | — |
| 31 | John Schneller | 62 | Head | Baker | Hungary |
| 32 | Helen Schneller | 50 | Wife | — | Hungary |
| 33 | James Schneller | 25 | Son | Plumber | Hungary |
| 34 | Theresa Schneller | 25 | Daughter | Saleslady | Hungary |
| 35 | James Farrell | 41 | Head | Sign Painter | New York |
| 36 | Katherine Farrell | 41 | Wife | — | New York |
| 37 | Virginia Farrell | 16 | Daughter | — | New York |
| 38 | James Farrell | 15 | Son | — | New York |
| 39 | William Farrell | 10 | Son | — | New York |
| 40 | Frank Bodnar | 55 | Head | Laborer | Hungary |
Pedigree Summary
William
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.81
Max depth 4 (1900–1950 window)
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)