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John Mcdonnell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this John Mcdonnell across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 10-person household.
Age 26
b. ~1914
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McDonnell |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | 40 |
| Industry | Air Conditioning |
| Class of Worker | Business |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | 40 |
| Township / Ward | New York City |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alfred Mcdonnell | Son | — | 15 | ~1925 |
| William Mcdonnell | Son | — | 13 | ~1927 |
| Joseph Mcdonnell | Son | — | 18 | ~1922 |
| Grace Mcdonnell | Daughter | — | 22 | ~1918 |
| John Mcdonnell | Son | — | 26 | ~1914 |
| Eileen Mcdonnell | Daughter | — | 20 | ~1920 |
| John Mcdonnell | Head | — | 52 | ~1888 |
| George Mcdonnell | Son | — | 29 | ~1911 |
| Jane Mcdonnell | Spouse | — | 50 | ~1890 |
| Mary Mcdonnell | Daughter | — | 28 | ~1912 |
Census Appearances
1930
Kings, New …
Son, age 15
Kings, New York · implied b. ~1915 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonough |
| Given Name | John Jr |
| 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 | New York |
| Occupation | Messenger |
| Industry | Brokerage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 26
Kings-County, New York · implied b. ~1914 — 10 household members
| Surname | McDonnell |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | 40 |
| Industry | Air Conditioning |
| Class of Worker | Business |
| Highest Grade | H 4 |
| 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 John Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcdonnell
Son · 1940 · age 26 · b. ~1914 · New York
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Sibling
George Mcdonnell
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdonnell
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Mcdonnell
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcdonnell
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcdonnell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Mcdonnell
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Mcdonnell
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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02560-00477)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Ellis | 35 | Sister-in-law | Folder | New York |
| 42 | Dora Ellis | 30 | Sister-in-law | Folding | New York |
| 43 | Charles B. Hessling | 44 | Head | — | Sweden |
| 44 | Mary Hessling | 64 | Wife | — | Eire |
| 45 | Richard J. Jr. Fallon | 51 | Lodger | Home Worker | New York |
| 46 | Joseph P. Casey | 64 | Lodger | — | Eire |
| 47 | William Grokee | 52 | Lodger | 40 | Virginia |
| 48 | Antone Hassler | 40 | Lodger | 40 | New York |
| 49 | George Hanson | 28 | Lodger | 35 | New York |
| 50 | Antonio Salino | 40 | Lodger | 35 | Italy |
| 51 | William Krol | 53 | Head | 40 | Poland |
| 52 | Anna A. Krol | 43 | Wife | — | Poland |
| 53 | Helen Krol | 23 | Daughter | 40 | New York |
| 54 | Irene Krol | 22 | Daughter | 40 | New York |
| 55 | Sonny Krol | 17 | Son | — | New York |
| 56 | Richard Krol | 12 | Son | — | New York |
| 57 | Raymond Donaskey | 45 | Son-in-law | — | New York |
| 58 | Gerald Borg | 31 | Head | 48 | Malta |
| 59 | Mary A. Borg | 35 | Wife | — | Malta |
| 60 | Patricia Borg | 2 | Daughter | — | New York |
| 61 | Harold Teskie | 23 | Head | 40 | New York |
| 62 | Florence A. Teskie | 21 | Wife | — | New York |
| 63 | John J. Troter | 34 | Head | 40 | New York |
| 64 | Rose Troter | 20 | Wife | 40 | Germany |
| 65 | John Caratello | 28 | Head | 40 | New York |
| 66 | Clara A. Caratello | 26 | Wife | — | New York |
| 67 | Emmett A. Belseron | 47 | Head | 40 | West Virginia |
| 68 | Edna M. Belseron | 47 | Wife | — | New York |
| 69 | John Mcdonnell | 52 | Head | 48 | New York |
| 70 | Jane Mcdonnell | 50 | Wife | — | New York |
| 71 | George Mcdonnell | 29 | Son | 48 | New York |
| 72 | Mary Mcdonnell | 28 | Daughter | 40 | New York |
| 73 | John Jr. Mcdonnell THIS PERSON | 26 | Son | 40 | New York |
| 74 | Grace A. Mcdonnell | 22 | Daughter | 35 | New York |
| 75 | Eileen Mcdonnell | 20 | Daughter | 40 | New York |
| 76 | Joseph Mcdonnell | 18 | Son | — | New York |
| 77 | Alfred Mcdonnell | 15 | Son | — | New York |
| 78 | William Mcdonnell | 13 | Son | — | New York |
| 79 | Michael Lessing | 38 | Head | 40 | New York |
| 80 | Alice A. Lessing | 36 | Wife | — | New York |
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)