JM
James Mcdermott — 1940 US Census Record
Model Tree available1940 United States Federal Census · Richmond-County, New York
Our Model Tree links this James Mcdermott across the 1920, 1930 and 1940 US Censuses in Richmond-County, New York (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Richmond-County, New York |
| Surname | McDermott |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Richmond Boro |
| 1935 Residence (County) | Richmond |
| Additional Details | |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Richmond Boro |
| Est. Birth Year | ~1916 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Rita Mcdermott | Daughter | — | 26 | ~1914 |
| Grace Mcdermott | Daughter | — | 21 | ~1919 |
| James Mcdermott | Head | — | 51 | ~1889 |
| James Mcdermott | Son | — | 24 | ~1916 |
| Mary Mcdermott | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Richmond, New …
Son, age 3
Richmond, New York · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Richmond, New …
Son, age 14
Richmond, New York · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Richmond-County, New …
Son, age 24
Richmond-County, New York · implied b. ~1916 — 5 household members
| Surname | McDermott |
| Given Name | James J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Richmond Boro |
| 1935 Residence (County) | Richmond |
| Highest Grade | Hs 3 |
| 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 James Mcdermott across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mcdermott (~0.92 confidence) and father James Mcdermott (~0.92 confidence) and father James Mcdermott (~0.92 confidence) and mother Mary Mcdermott (~0.92 confidence) and mother Mary Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mcdermott
b. ~1888
Source father
● Household
· direct · ~0.92
Father
James Mcdermott
b. ~1889
Source father
● Household
· direct · ~0.92
Father
James Mcdermott
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Mary Mcdermott
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mary Mcdermott
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcdermott
Son · 1940 · age 24 · b. ~1916 · New York
★ You are viewing this record
Sibling
Rita Mcdermott
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Mcdermott
Sibling · 1940 · age 21
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-t0627-02760-00698)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Bernert | 79 | wife | — | New York |
| 42 | Cecile Bernert | 40 | daughter | — | New York |
| 43 | Raphel Scrano|Sciano | 70 | head | — | Italy |
| 44 | Elizabeth Scrano|Sciano | 62 | wife | — | Italy |
| 45 | Salvatore Scrano|Sciano | 35 | son | Manager | New York |
| 46 | Gerard Scrano|Sciano | 24 | son | Clerk | New York |
| 47 | Patsy Scrano|Sciano | 24 | son | Clerk | New York |
| 48 | Mary Sapnano|Sagnano | 60 | cousin | — | Italy |
| 49 | Harry Bombardi | 42 | head | Clerk | New York |
| 50 | Tina Bombardi | 39 | wife | — | New York |
| 51 | Pearl Bombardi | 13 | daughter | — | New York |
| 52 | Harry Jr. Bombardi | 10 | son | — | New York |
| 53 | Vincent Mannino | 44 | head | Shoe Maker | Italy |
| 54 | Gertrude Mannino | 34 | wife | — | Germany |
| 55 | Vincent Mannino | 16 | son | — | New York |
| 56 | Ida Mannino | 15 | daughter | — | New York |
| 57 | Ernest Mannino | 14 | son | — | New York |
| 58 | Thomas Mannino | 12 | son | — | New York |
| 59 | Margaret Mannino | 1 | daughter | — | New York |
| 60 | Mary Brennan | 72 | sister | Housekeeper | New York |
| 61 | John Brennan | 70 | brother | — | New York |
| 62 | Frances I. Darcy | 55 | head | — | New York |
| 63 | Katherine E. Darcy | 27 | daughter | Chemical Testing | New York |
| 64 | Joseph F. Darcy | 24 | son | Checker | New York |
| 65 | Aloysius B. Darcy | 21 | son | Delivery Boy | New York |
| 66 | Agnes Mccormick | 59 | sister | Female Cleaner | New York |
| 67 | Fred Schmeiser | 54 | head | Recreation Secty | New York |
| 68 | Claire Schmeiser | 41 | wife | — | England |
| 69 | Dorothy Schmeiser | 10 | daughter | — | New York |
| 70 | Oscar M. Mullahan | 36 | head | Sub Station Oper. | Germany |
| 71 | Anne Mullahan | 40 | wife | — | New York |
| 72 | Albert Mullahan | 9 | son | — | New York |
| 73 | Richard Mullahan | 7 | son | — | New York |
| 74 | James Mcdermott | 51 | head | Builder | New York |
| 75 | Mary E. Mcdermott | 51 | wife | — | New Jersey |
| 76 | Rita Mcdermott | 26 | daughter | Sales Girl | New York |
| 77 | James J. Mcdermott THIS PERSON | 24 | son | — | New York |
| 78 | Grace Mcdermott | 21 | daughter | Sales Girl | New York |
| 79 | Edwin A. Rosenberg | 45 | head | Proprietor | New York |
| 80 | Martha Rosenberg | 44 | wife | Sales Lady | New York |
Pedigree Summary
James + 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)