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John Mccann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Nassau-County, New York
Our Model Tree links this John Mccann across the 1930 and 1940 US Censuses in Nassau-County, New York (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 11-person household.
Age 20
b. ~1920
Male
Son
Born: Scotland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nassau-County, New York |
| Surname | McCann |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Roslyn Village |
| 1935 Residence (County) | Nassau |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Roslyn Village |
| Est. Birth Year | ~1920 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Terence Mccann | Son | — | 10 | ~1930 |
| John Mccann | Son | — | 20 | ~1920 |
| Elizabeth Mccann | Spouse | — | 42 | ~1898 |
| Thomas Mccann | Head | — | 45 | ~1895 |
| Evelyn Mccann | Daughter | — | 23 | ~1917 |
| Eileen Mccann | Daughter | — | 6 | ~1934 |
| Kathleen Mccann | Daughter | — | 16 | ~1924 |
| Thomas Mccann | Son | — | 12 | ~1928 |
| Margaret Mccann | Daughter | — | 12 | ~1928 |
| Deryll Mccann | Daughter | — | 3 | ~1937 |
| Elizabeth Mccann | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Nassau, New …
Son, age 10
Nassau, New York · implied b. ~1920 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCann |
| Given Name | John C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1926 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Northern Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Nassau-County, New …
Son, age 20
Nassau-County, New York · implied b. ~1920 — 11 household members
| Surname | McCann |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Scotland |
| 1935 Residence (City) | Roslyn Village |
| 1935 Residence (County) | Nassau |
| Naturalization Status | Alien |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Mccann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mccann
Son · 1940 · age 20 · b. ~1920 · New York
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Sibling
Thomas Mccann
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mccann
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Terence Mccann
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mccann
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Mccann
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Mccann
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Deryll Mccann
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Mccann
Sibling · 1940 · age 23
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 — Nassau-County, New York
Open full size
1940 US Federal Census — Nassau-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02691-00682)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J. Walsh | 51 | Head | Limerocky | Eire |
| 2 | Ethel Walsh | 49 | Wife | — | New York |
| 3 | Harold Walsh | 19 | Son | Laborer | New York |
| 4 | John Walsh | 17 | Son | Part Time Worker | New York |
| 5 | Dorothy Walsh | 14 | Daughter | — | New York |
| 6 | James Walsh | 12 | Son | — | New York |
| 7 | Marie Walsh | 10 | Daughter | — | New York |
| 8 | Thomas J. Walsh | 7 | Son | — | New York |
| 9 | Humbert Delape | 47 | Head | Night-Watchman | New York |
| 10 | Catherine Delape | 39 | Wife | — | New York |
| 11 | Ralph Delape | 23 | Son | Laborer | New York |
| 12 | Philip Delape | 21 | Son | — | New York |
| 13 | Mildred Delape | 18 | Daughter | — | New York |
| 14 | Daniel Delape | 16 | Son | — | New York |
| 15 | Gloria Delape | 10 | Daughter | — | New York |
| 16 | Daniel Welch | 38 | Head | Operating Engineer | W. Virginia |
| 17 | Ola Ab Welch | 31 | Wife | — | New York |
| 18 | Virginia Welch | 18 | Daughter | — | W. Virginia |
| 19 | Dorothy Welch | 15 | Daughter | — | W. Virginia |
| 20 | Daniel Welch | 11 | Son | — | Maryland |
| 21 | Jimmie Welch | 9 | Son | — | New York |
| 22 | Michael Hassett | 43 | Head | Waiter | Eire |
| 23 | Margaret Hassett | 45 | Wife | — | Eire |
| 24 | Maureen Hassett | 15 | Daughter | — | New York |
| 25 | Michael Jr. Hassett | 12 | Son | — | New York |
| 26 | John B. Hassett | 9 | Son | — | New York |
| 27 | Edward J. Hassett | 6 | Son | — | New York |
| 28 | William Strong | 59 | Head | — | New Jersey |
| 29 | Jane Blankhage | 44 | Daughter | — | New Jersey |
| 30 | Thomas Mccann | 45 | Head | Business Rep. | Northern Ireland |
| 31 | Elizabeth Mccann | 42 | Wife | — | Northern Ireland |
| 32 | Evelyn Mccann | 23 | Daughter | Telephone Operator | Scotland |
| 33 | John Mccann THIS PERSON | 20 | Son | — | Scotland |
| 34 | Elizabeth Mccann | 18 | Daughter | Bookkeeper | Scotland |
| 35 | Kathleen Mccann | 16 | Daughter | — | Scotland |
| 36 | Thomas Mccann | 12 | Son | — | New York |
| 37 | Margaret Mccann | 12 | Daughter | — | New York |
| 38 | Terence Mccann | 10 | Son | — | New York |
| 39 | Eileen Mccann | 6 | Daughter | — | New York |
| 40 | Deryll Mccann | 3 | Daughter | — | 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)