JC
James Cowan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Niagara-County, New York
Our Model Tree links this James Cowan across the 1930 and 1940 US Censuses in Niagara-County, New York (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 7-person household.
Age 16
b. ~1924
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Niagara-County, New York |
| Surname | Cowan |
| Given Name | James O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Niagara Falls |
| 1935 Residence (County) | Niagara |
| Additional Details | |
| Highest Grade | H-1 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | Niagara Falls |
| Est. Birth Year | ~1924 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| William Cowan | Son | — | 21 | ~1919 |
| Dolores Cowan | Daughter | — | 14 | ~1926 |
| William Cowan | Head | — | 53 | ~1887 |
| James Cowan | Son | — | 16 | ~1924 |
| Mary Cowan | Daughter | — | 24 | ~1916 |
| Walter Cowan | Son | — | 17 | ~1923 |
| Rose Cowan | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Niagara, New …
Son, age 5
Niagara, New York · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cowan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Scotland |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Niagara-County, New …
Son, age 16
Niagara-County, New York · implied b. ~1924 — 7 household members
| Surname | Cowan |
| Given Name | James O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Niagara Falls |
| 1935 Residence (County) | Niagara |
| Highest Grade | H-1 |
| 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 James Cowan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cowan
Son · 1940 · age 16 · b. ~1924 · New York
★ You are viewing this record
Sibling
William Cowan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Cowan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dolores Cowan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cowan
Sibling · 1940 · age 24
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 — Niagara-County, New York
Open full size
1940 US Federal Census — Niagara-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02697-00342)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George A. Clark | 24 | Head | Press-Man | New York |
| 42 | Doris A. Clark | 20 | Wife | — | New York |
| 43 | Pearl G. Wilson | 38 | Head | Waitress | Canada-English |
| 44 | Ruth G. Wilson | 15 | Daughter | Saleswoman | Canada-English |
| 45 | Charles W. Wilson | 13 | Son | — | Canada-English |
| 46 | Charles J. Streicher | 20 | Lodger | Laborer-General | New York |
| 47 | Adelina Brindisi | 41 | Head | — | Italy |
| 48 | James Brindisi | 21 | Son | — | New York |
| 49 | Onofrio Palazzo | 26 | Son-in-law | Deliverer | Italy |
| 50 | Rose E. Palazzo | 23 | Daughter | — | New York |
| 51 | Eugene O. Palazzo | 2 | Grand-son | — | New York |
| 52 | Augustino Panecasio | 49 | Boarder | Laborer-General | Italy |
| 53 | William Cowan | 53 | Head | — | Scotland |
| 54 | Rose A. Cowan | 48 | Wife | — | New York |
| 55 | Mary A. Cowan | 24 | Daughter | Comptometer Operator | New York |
| 56 | William A. Cowan | 21 | Son | Drafter | New York |
| 57 | Walter J. Cowan | 17 | Son | — | New York |
| 58 | James O. Cowan THIS PERSON | 16 | Son | — | New York |
| 59 | Dolores L. Cowan | 14 | Daughter | — | New York |
| 60 | William T. Barrett | 22 | Head | Laborer-General | New York |
| 61 | Alberta G. Barrett | 22 | Wife | — | New York |
| 62 | Metzler Mcintyre | 36 | Head | Assistant Foreman | Massachusetts |
| 63 | Alfarda Mcintyre | 37 | Wife | — | Canada-English |
| 64 | Bernice M. Mcintyre | 15 | Daughter | — | New York |
| 65 | Metzler Jr. Mcintyre | 13 | Son | — | New York |
| 66 | Malcolm C. Mcintyre | 12 | Son | — | New York |
| 67 | John V. Mcintyre | 11 | Son | — | New York |
| 68 | Mary A. Mcintyre | 9 | Daughter | — | New York |
| 69 | Nancy L. Mcintyre | 8 | Daughter | — | New York |
| 70 | Peter C. Julian | 31 | Head | Laborer-General | New York |
| 71 | Francis D. Julian | 25 | Wife | — | Massachusetts |
| 72 | Jeanette B. Julian | 9 | Daughter | — | Canada-English |
| 73 | Peter G. Julian | 3 | Son | — | New York |
| 74 | Carlo Fiori | 47 | Head | — | Italy |
| 75 | Rose Fiori | 38 | Wife | — | Pennsylvania |
| 76 | Frank Fiori | 22 | Son | — | Pennsylvania |
| 77 | Lillian Fiori | 21 | Daughter | — | Pennsylvania |
| 78 | Elizabeth Fiori | 19 | Daughter | — | Pennsylvania |
| 79 | Joseph A. Fiori | 17 | Son | — | Pennsylvania |
| 80 | Anthony A. Fiori | 16 | Son | — | Pennsylvania |
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)