WD
William Donnelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Westchester-County, New York
Our Model Tree links this William Donnelly across the 1920, 1930 and 1940 US Censuses in Westchester-County, New York (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westchester-County, New York |
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Port Chester Village |
| 1935 Residence (County) | Westchester |
| Additional Details | |
| Occupation | Mach. Helper |
| Industry | Candy Mfg |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 900 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Mach. Helper |
| Township / Ward | Port Chester Village |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Jessie Donnelly | Spouse | — | 50 | ~1890 |
| William Donnelly | Son | — | 21 | ~1919 |
| Richard Donnelly | Son | — | 15 | ~1925 |
| John Coggins | Other | — | 32 | ~1908 |
| William Donnelly | Head | — | 59 | ~1881 |
Census Appearances
1920
Westchester, New …
Son, age 1
Westchester, New York · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| 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 | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Westchester, New …
Son, age 11
Westchester, New York · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | William P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Westchester-County, New …
Son, age 21
Westchester-County, New York · implied b. ~1919 — 5 household members
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Port Chester Village |
| 1935 Residence (County) | Westchester |
| Occupation | Mach. Helper |
| Industry | Candy Mfg |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 900 |
| Highest Grade | H-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 Donnelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Donnelly (~0.92 confidence) and father William Donnelly (~0.92 confidence) and father William Donnelly (~0.92 confidence) and mother Jessie Donnelly (~0.92 confidence) and mother Jessie Donnelly (~0.92 confidence) and mother Rose Donnelly (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Donnelly
b. ~1881
Source father
● Household
· direct · ~0.92
Father
William Donnelly
b. ~1881
Source father
● Household
· direct · ~0.92
Father
William Donnelly
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Jessie Donnelly
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Jessie Donnelly
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Rose Donnelly
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Donnelly
Son · 1940 · age 21 · b. ~1919 · New York
★ You are viewing this record
Sibling
Richard Donnelly
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 — 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-t0627-02812-00586)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sadie S. Miller | 53 | Head | — | New York |
| 2 | Jerome Miller | 27 | Son | Buyer | New York |
| 3 | Samuel Miller | 23 | Son | Salesman | New York |
| 4 | Constance Miller | 21 | Daughter | — | New York |
| 5 | Adolf F. Carlson | 68 | Head | Machinist | Sweden |
| 6 | Mary E. Carlson | 71 | Wife | — | Sweden |
| 7 | Eda Carlson | 36 | Daughter | Hair Dresser | Mass. |
| 8 | Mabel Carlson | 35 | Daughter | Stenographer | Mass. |
| 9 | Mary E. Carpenter | 86 | Head | — | New York |
| 10 | Marion B. Carpenter | 53 | Daughter | Teacher | New York |
| 11 | Alice F. Carpenter | 52 | Daughter | — | New York |
| 12 | William H. Fallon | 38 | Head | Superintendent | New York |
| 13 | Jane V. Fallon | 33 | Wife | — | New York |
| 14 | William A. Fallon | 2 | Son | — | New York |
| 15 | Anthony O'Connor | 6 | Child | — | New York |
| 16 | Harold O'Connor | 3 | Child | — | New York |
| 17 | William Donnelly | 59 | Head | Night Watch | New York |
| 18 | Jessie Donnelly | 50 | Wife | — | New York |
| 19 | William Donnelly THIS PERSON | 21 | Son | Mach. Helper | New York |
| 20 | Richard Donnelly | 15 | Son | — | New York |
| 21 | John Coggins | 32 | Lodger | Manager | Irish Free St. |
| 22 | Joseph Quintar | 39 | Head | Broker Insurance | New York |
| 23 | Virginia Quintar | 33 | Wife | — | Pennsylvania |
| 24 | Ronald Quintar | 9 | Son | — | New York |
| 25 | Gail Quintar | 7 | Daughter | — | New York |
| 26 | Frank Quintar | 82 | Father | — | Italy |
| 27 | Jennie Quintar | 68 | Mother | — | Italy |
| 28 | Max Gordon | 56 | Head | Proprietor | Russia |
| 29 | Sarah Gordon | 55 | Wife | — | Russia |
| 30 | Lester Gordon | 25 | Son | Salesman | New York |
| 31 | Rita Gordon | 17 | Daughter | — | New York |
| 32 | William A. Davidson | 63 | Head | Attorney | New York |
| 33 | Mabel A. Davidson | 60 | Wife | — | New York |
| 34 | Randolph Simmen | 60 | Son in law | Asst. Acct. | New Jersey |
| 35 | Bettina Simmen | 52 | Daughter in law | — | New York |
| 36 | Edward M. Mulford | 75 | Head | — | New York |
| 37 | Sybil A. Mulford | 74 | Wife | — | Pennsylvania |
| 38 | Hilma Zalman | 24 | Housekeeper | Housekeeper | Conn. |
| 39 | Augustus H. Cutter | 42 | Head | Engineer | New Jersey |
| 40 | Helen Cutter | 42 | Wife | — | New York |
Pedigree Summary
William + 1 sibling
Gen 1 · 6 parents
~0.92
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)