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Thomas Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Onondaga-County, New York
Our Model Tree links this Thomas Alexander across the 1930 and 1940 US Censuses in Onondaga-County, New York (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Onondaga-County, New York |
| Surname | Alexander |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Dewitt Town |
| 1935 Residence (County) | Onondaga |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Dewitt Town |
| Est. Birth Year | ~1925 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Donald Alexander | Son | — | 9 | ~1931 |
| Thomas Alexander | Other | — | 77 | ~1863 |
| Elizabeth Alexander | Daughter | — | 23 | ~1917 |
| Frances Alexander | Spouse | — | 42 | ~1898 |
| Mary Alexander | Daughter | — | 18 | ~1922 |
| Harris Smith | Other | — | 26 | ~1914 |
| Elizabeth Alexander | Other | — | 73 | ~1867 |
| Frances Alexander | Daughter | — | 11 | ~1929 |
| James Alexander | Son | — | 3 | ~1937 |
| Thomas Alexander | Son | — | 15 | ~1925 |
| Carlyle Alexander | Head | — | 42 | ~1898 |
Census Appearances
1930
Onondaga, New …
Son, age 6
Onondaga, New York · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Thomas L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Onondaga-County, New …
Son, age 15
Onondaga-County, New York · implied b. ~1925 — 11 household members
| Surname | Alexander |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Dewitt Town |
| 1935 Residence (County) | Onondaga |
| Highest Grade | H 2 |
| 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 Thomas Alexander across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Alexander
Son · 1940 · age 15 · b. ~1925 · New York
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Sibling
James Alexander
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Alexander
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Alexander
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Alexander
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Alexander
Sibling · 1940 · age 18
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 — Onondaga-County, New York
Open full size
1940 US Federal Census — Onondaga-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02703-00621)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jacqueline Lafrance | 13 | Daughter | — | Canada-French |
| 2 | Yolande Lafrance | 11 | Daughter | — | Canada-French |
| 3 | Carlyle Alexander | 42 | Head | Farm Operator | Michigan |
| 4 | Frances Alexander | 42 | Wife | — | Illinois |
| 5 | Elizabeth Alexander | 23 | Daughter | — | Michigan |
| 6 | Mary Alice Alexander | 18 | Daughter | Cooking Demonstrator | New York |
| 7 | Thomas Alexander THIS PERSON | 15 | Son | — | New York |
| 8 | Frances Alexander | 11 | Daughter | — | New York |
| 9 | Donald Alexander | 9 | Son | — | New York |
| 10 | James Alexander | 3 | Son | — | New York |
| 11 | Thomas Alexander | 77 | Father | Farmer | Canada-English |
| 12 | Elizabeth Alexander | 73 | Mother | — | Canada-English |
| 13 | Harris Smith | 26 | Hired man | Farm Hand | New Hampshire |
| 14 | John Diello | 53 | Head | Gardener | France |
| 15 | Gertrude Diello | 43 | Wife | — | New York |
| 16 | Louise Diello | 20 | Daughter | — | New York |
| 17 | Florence Diello | 18 | Daughter | — | New York |
| 18 | John Jr. Diello | 16 | Son | — | New York |
| 19 | Joseph Diello | 13 | Son | — | New York |
| 20 | Donald Diello | 9 | Son | — | New York |
| 21 | Betty Diello | 12 | Daughter | — | New York |
| 22 | Barbara Diello | 7 | Daughter | — | New York |
| 23 | Frederick Diello | 5 | Son | — | New York |
| 24 | William Diello | 3 | Son | — | New York |
| 25 | Nancy Diello | 2 | Daughter | — | New York |
| 26 | Ernest Y. Hoyt | 62 | Head | Clerk | New York |
| 27 | Iva Hoyt | 50 | Wife | — | New York |
| 28 | Howard White | 40 | Head | Kiln Fireman | New York |
| 29 | Mildred White | 38 | Wife | — | New York |
| 30 | Paul White | 17 | Son | — | New York |
| 31 | Albert Plohle | 4 | Foster son | — | New York |
| 32 | Cornelia Phillips | 63 | Head | — | New York |
| 33 | Florence Burke | 34 | Daughter | Housekeeper | New York |
| 34 | Harry Lavergne | 44 | Head | Caretaker | Canada-French |
| 35 | Elodie Lavergne | 42 | Wife | — | Canada-French |
| 36 | Homer Lavergne | 20 | Son | Caretaker | Canada-French |
| 37 | Ida Lavergne | 18 | Daughter | Servant | Canada-French |
| 38 | Cecilia Lavergne | 16 | Daughter | — | Canada-French |
| 39 | Theresa Lavergne | 14 | Daughter | — | Canada-French |
| 40 | Ernest Lavergne | 12 | Son | — | Canada-French |
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)