WK
William Kirby — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this William Kirby across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1901), then head of a 8-person household.
Age 39
b. ~1901
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Kirby |
| Given Name | William F. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brooklyn |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | H 2 |
| 1935 Residence | New York |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | New York City |
| Est. Birth Year | ~1901 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Kenneth Adams | Son | — | 8 | ~1932 |
| Gertrude Higgins | Other | — | 60 | ~1880 |
| Eileen Adams | Daughter | — | 40 | ~1900 |
| Helen Kirby | Spouse | — | 64 | ~1876 |
| Robert Adams | Son | — | 11 | ~1929 |
| William Kirby | Son | — | 39 | ~1901 |
| Dorathea Kirby | Daughter | — | 30 | ~1910 |
| William Kirby | Head | — | 73 | ~1867 |
Census Appearances
1930
Kings, New …
Son, age 27
Kings, New York · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New Zealand |
| Mother's Birthplace | Massachusetts |
| Occupation | Trucking |
| Industry | Own Business |
| Class of Worker | E |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Kings-County, New …
Son, age 39
Kings-County, New York · implied b. ~1901 — 8 household members
| Surname | Kirby |
| Given Name | William F. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Brooklyn |
| 1935 Residence (County) | Kings |
| Hours Worked | 0 |
| Highest Grade | H 2 |
| 1935 Residence | New York |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Kirby across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Kirby
Son · 1940 · age 39 · b. ~1901 · New York
★ You are viewing this record
Sibling
Dorathea Kirby
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Adams
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Adams
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Adams
Sibling · 1940 · age 40
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-t0627-02571-00464)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rosemary C. Mccauley | 13 | Daughter | — | New York |
| 2 | Charles F. Mcguirl | 77 | Head | — | New York |
| 3 | Mary Mcguirl | 72 | Wife | — | Ireland |
| 4 | Mary C. Mcguirl | 42 | Daughter | Stenographer | New York |
| 5 | Sarah Mcguirl | 39 | Daughter | Stenographer | New York |
| 6 | Gilbert Calamari | 48 | Head | Marine Stoker | New York |
| 7 | Frieda Calamari | 48 | Wife | — | New York |
| 8 | Gilbert Jr. Calamari | 20 | Son | Operator | New York |
| 9 | Joseph Harley | 61 | Head | Editor | Ireland |
| 10 | Sarah Harley | 51 | Wife | — | Ireland |
| 11 | Grace A. Harley | 23 | Daughter | Bookkeeper | New York |
| 12 | Donald J. Harley | 21 | Son | Machine Operator | New York |
| 13 | Mary A. Kane | 69 | Head | — | New York |
| 14 | Ann E. Hoolahan | 67 | Sister | Binder | New York |
| 15 | Paul Szabo | 34 | Head | Teacher | New York |
| 16 | Marita Szabo | 29 | Wife | — | New York |
| 17 | Paul Jr. Szabo | 2 | Son | — | New York |
| 18 | Cornelius Szabo | 1 | Son | — | New York |
| 19 | Gertrude M. Coughlin | 59 | Head | Teacher | New York |
| 20 | S. Coughlin | 26 | Daughter | Clerical Work | New York |
| 21 | Amy G. Foreman | 61 | Head | — | England |
| 22 | William Foreman | 23 | Son | Porter | New York |
| 23 | George W. Foreman | 33 | Son | Checker | New York |
| 24 | Margaret C. Foreman | 21 | Daughter | Salesgirl | New York |
| 25 | Mary A. Mcconeghy | 76 | Head | Pension | N. Carolina |
| 26 | George A. Mcconeghy | 21 | Grandson | Motorman | New York |
| 27 | Alexander Mcconeghy | 20 | Grandson | Shipping Clerk | New York |
| 28 | Francis J. Devlin | 60 | Head | Clerk | New York |
| 29 | Catherine E. Devlin | 54 | Wife | — | New York |
| 30 | Eleanor F. Devlin | 23 | Daughter | Typist | New York |
| 31 | Elizabeth J. E. Lillies | 73 | Head | Office Clerk | New York |
| 32 | William F. Kirby | 73 | Head | Telephone Operator | New York |
| 33 | Helen F. Kirby | 64 | Wife | — | Massachusetts |
| 34 | William F. Jr. Kirby THIS PERSON | 39 | Son | — | Massachusetts |
| 35 | Dorathea V. Kirby | 30 | Daughter | — | New York |
| 36 | Eileen Adams | 40 | Daughter | — | Massachusetts |
| 37 | Robert Adams | 11 | Son | — | New York |
| 38 | Kenneth Adams | 8 | Son | — | New York |
| 39 | Gertrude Higgins | 60 | Sister | — | Massachusetts |
| 40 | Joseph Brislin | 40 | Head | Accountant | 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)