WM
William Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · Richmond-County, New York
Our Model Tree links this William Mcgrath across the 1920, 1930 and 1940 US Censuses in Richmond-County, New York (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1914), then head of a 7-person household.
Age 26
b. ~1914
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Richmond-County, New York |
| Surname | McGRATH |
| Given Name | William, Jr. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Richmond Borough |
| 1935 Residence (County) | Richmond |
| Additional Details | |
| Occupation | House man |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | House Man |
| Township / Ward | Richmond Borough |
| Est. Birth Year | ~1914 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mcgrath | Son | — | 26 | ~1914 |
| Denis Gleeson | Other | — | 38 | ~1902 |
| Ends Here | Other | — | — | |
| Teresa Mcgrath | Daughter | — | 20 | ~1920 |
| Mary Mcgrath | Spouse | — | 58 | ~1882 |
| Walter Mcgrath | Son | — | 25 | ~1915 |
| William Mcgrath | Head | — | 55 | ~1885 |
Census Appearances
1920
Richmond, New …
Son, age 4
Richmond, New York · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | William J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Mother Tongue | English |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Richmond, New …
Son, age 15
Richmond, New York · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | William P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Richmond-County, New …
Son, age 26
Richmond-County, New York · implied b. ~1914 — 7 household members
| Surname | McGRATH |
| Given Name | William, Jr. |
| Relationship to Head | SON |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Richmond Borough |
| 1935 Residence (County) | Richmond |
| Occupation | House man |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mcgrath (~0.92 confidence) and father John Mcgrath (~0.92 confidence) and father William Mcgrath (~0.92 confidence) and mother Deborah Mcgrath (~0.92 confidence) and mother Mary Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mcgrath
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Mcgrath
b. ~1879
Source father
● Household
· direct · ~0.92
Father
William Mcgrath
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Deborah Mcgrath
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mary Mcgrath
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mcgrath
Son · 1940 · age 26 · b. ~1914 · New York
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Sibling
Walter Mcgrath
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Mcgrath
Sibling · 1940 · age 20
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-t0627-02763-00134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William, Jr. Luthin | 18 | Son | — | New York |
| 2 | Veronica Luthin | 13 | Daughter | — | New York |
| 3 | Henry Ayuso | 43 | Head | Agent | New York |
| 4 | Sarah Ayuso | 41 | WIFE | — | ITALY |
| 5 | Louise Ayuso | 11 | DAUGHTER | — | New York |
| 6 | Richard Ayuso | 9 | SON | — | New York |
| 7 | George Ayuso | 3 | SON | — | New York |
| 8 | William Mcgrath | 55 | Head | Elevator Operator | Irish Free State |
| 9 | Mary Mcgrath | 58 | WIFE | Seamstress | Irish Free State |
| 10 | William, Jr. Mcgrath THIS PERSON | 26 | SON | House Man | New York |
| 11 | Walter Mcgrath | 25 | SON | Asst Carpenter | New York |
| 12 | Teresa Mcgrath | 20 | DAUGHTER | Watch Winder | New York |
| 13 | Denis Gleeson | 38 | Lodger | Counterman | Irish Free State |
| 14 | """Ends Block """"D""""""" Here | None | and | — | — |
| 15 | Frances Rathke | 64 | HEAD | — | New York |
| 16 | Fred Rathke | 36 | SON | Sales-Clerk | New York |
| 17 | Fanny Rathke | 31 | DAUGHTER | Clerk-File | New York |
| 18 | Margaret Rathke | 26 | DAUGHTER | Comptometrist | New York |
| 19 | Frank Young | 63 | Head | Electro-Typist | New York |
| 20 | Edith Young | 67 | WIFE | — | New York |
| 21 | Charles, A Fett | 53 | Head | Plumbing Contractor | New York |
| 22 | Chara Fett | 48 | WIFE | — | New York |
| 23 | Charles Jr. Fett | 26 | SON | Plumber'S-Asst | New York |
| 24 | Warren Fett | 19 | SON | Stock-Clerk | New York |
| 25 | Clara Becker | 32 | niece | Billing Clerk | New York |
| 26 | Carl Wittlinger | 50 | Head | Mechanical Engineer | Germany |
| 27 | Gerda Wittlinger | 46 | WIFE | — | New York |
| 28 | Helen Pfaitz | 49 | sister-in-law | Counter Girl | New York |
| 29 | Susanna Pfaitz | 76 | mother-in-law | — | New York |
| 30 | Joseph Wittendorfer | 49 | Head | Buyer | Germany |
| 31 | Louise Wittendorfer | 46 | WIFE | — | Germany |
| 32 | Elsa Wittendorfer | 24 | DAUGHTER | Dress-Designer | New York |
| 33 | Roy Wittendorfer | 21 | SON | Office-Clerk | New York |
| 34 | Albert, A Schweizer | 38 | Head | Policeman | New York |
| 35 | Irene Schweizer | 36 | WIFE | — | New York |
| 36 | Claire Schweizer | 12 | DAUGHTER | — | New York |
| 37 | Alberta Schweizer | 10 | DAUGHTER | — | New York |
| 38 | Roberta Schweizer | 10 | DAUGHTER | — | New York |
| 39 | Joan Alter | 5 | niece | — | New York |
| 40 | Philip Fitzpatrick | 28 | Head | Marine Engineer | New York |
Pedigree Summary
William + 2 siblings
Gen 1 · 5 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)