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William Flynn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Flynn across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 12-person household.
Age 12
b. ~1928
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Flynn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York Brooklyn |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York Brooklyn |
| Est. Birth Year | ~1928 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Catherine Flynn | Daughter | — | 23 | ~1917 |
| Susan Flynn | Daughter | — | 1 | ~1939 |
| Joan Flynn | Daughter | — | 6 | ~1934 |
| William Flynn | Head | — | 51 | ~1889 |
| Robert Flynn | Son | — | 10 | ~1930 |
| Frank Flynn | Son | — | 9 | ~1931 |
| Brendan Flynn | Son | — | 5 | ~1935 |
| Edward Flynn | Son | — | 15 | ~1925 |
| William Flynn | Son | — | 12 | ~1928 |
| John Flynn | Son | — | 20 | ~1920 |
| Thomas Flynn | Son | — | 17 | ~1923 |
| Mary Flynn | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Kings, New …
Son, age 2
Kings, New York · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | none |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 12
Kings-County, New York · implied b. ~1928 — 12 household members
| Surname | Flynn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York Brooklyn |
| 1935 Residence (County) | Kings |
| Highest Grade | 6 |
| 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 Flynn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Flynn
Son · 1940 · age 12 · b. ~1928 · New York
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Sibling
Catherine Flynn
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Flynn
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Flynn
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Flynn
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susan Flynn
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Flynn
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Brendan Flynn
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Flynn
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Flynn
Sibling · 1940 · age 6
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-t0627-02553-00505)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matilda Peat | 21 | Daughter | Gardener | Scotland |
| 42 | David Peat | 20 | Son | Gardener | Scotland |
| 43 | Joseph Shenfield | 43 | Head | Salesman | New York |
| 44 | Marietta Shenfield | 41 | Wife | — | New York |
| 45 | Arthur Shenfield | 13 | Son | — | New York |
| 46 | Joan Shenfield | 11 | Daughter | — | New York |
| 47 | Herbert Shenfield | 7 | Son | — | New York |
| 48 | Helene Shenfield | 2 | Daughter | — | New York |
| 49 | Hyman Friedman | 53 | Head | Manager | Austria |
| 50 | Ida Friedman | 46 | Wife | — | Austria |
| 51 | Samuel Schlein | 28 | Head | Salesman | Russia |
| 52 | Evelyn Schlein | 24 | Daughter | — | New York |
| 53 | Lawrence Schlein | 2 | Grandson | — | New York |
| 54 | William Flynn | 51 | Head | Painter | New York |
| 55 | Mary D Flynn | 43 | Wife | — | New York |
| 56 | Catherine Flynn | 23 | Daughter | Artist | New York |
| 57 | John Flynn | 20 | Son | Delivery Boy | New York |
| 58 | Thomas Flynn | 17 | Son | Messenger | New York |
| 59 | Edward Flynn | 15 | Son | — | New York |
| 60 | William Flynn THIS PERSON | 12 | Son | — | New York |
| 61 | Robert Flynn | 10 | Son | — | New York |
| 62 | Frank Flynn | 9 | Son | — | New York |
| 63 | Joan Flynn | 6 | Daughter | — | New York |
| 64 | Brendan Flynn | 5 | Son | — | New York |
| 65 | Susan Flynn | 1 | Daughter | — | New York |
| 66 | Annie Lederman | 56 | Head | — | Poland |
| 67 | Shirley Lederman | 26 | Daughter | Finisher | Poland |
| 68 | Al Lederman | 25 | Son | Assistant Operator | Poland |
| 69 | Morris Milwick | 38 | Son-in-law | Dressmaker | Poland |
| 70 | Hazel Milwick | 30 | Daughter | Dressmaker | Poland |
| 71 | Phyllis Milwick | 4 | Granddaughter | — | New York |
| 72 | Sarah Burns | 57 | Head | — | Poland |
| 73 | Ann Burns | 32 | Daughter | Assistant Cook | Poland |
| 74 | Ted Burns | 24 | Son | Assistant Cook | Poland |
| 75 | Isidore Bienstock | 46 | Lodger | Superintendent | Rumania |
| 76 | Louis Dolofsky | 37 | Lodger | Salesman | Poland |
| 77 | Isaac Harth | 55 | Head | Lithographer | Russia |
| 78 | Lottie Harth | 55 | Wife | — | Rumania |
| 79 | Melvin Harth | 22 | Son | Lithographer | New York |
| 80 | — | None | — | — | — |
Related Census Records
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)