WC
William Cochran — 1940 US Census Record
Model Tree available1940 United States Federal Census · Chautauqua-County, New York
Our Model Tree links this William Cochran across the 1920, 1930 and 1940 US Censuses in Chautauqua-County, New York (XGBoost, ~Confirmed), with identified parents David & Hiram — first a son (b.~1907), then head of a 6-person household.
Age 33
b. ~1907
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Chautauqua-County, New York |
| Surname | Cochran |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Ripley Town |
| 1935 Residence (County) | Chautauqua |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Farmer |
| Township / Ward | Ripley Town |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Cochran | Daughter | — | 37 | ~1903 |
| David Cochran | Head | — | 74 | ~1866 |
| John Nelson | Other | — | 67 | ~1873 |
| Fredrick Cochran | Son | — | 35 | ~1905 |
| William Cochran | Son | — | 33 | ~1907 |
| Isabelle Cochran | Spouse | — | 67 | ~1873 |
Census Appearances
1920
Chautauqua, New …
Son, age 13
Chautauqua, New York · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochrane |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Chautauqua, New …
Son, age 23
Chautauqua, New York · implied b. ~1907 — 32 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochrane |
| Given Name | William G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Chautauqua-County, New …
Son, age 33
Chautauqua-County, New York · implied b. ~1907 — 6 household members
| Surname | Cochran |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Ripley Town |
| 1935 Residence (County) | Chautauqua |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Highest Grade | H-2 |
| 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 William Cochran across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father David Cochran (~0.92 confidence) and father Hiram Cochrane (~0.92 confidence) and mother Isabella Cochrane (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
David Cochran
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Hiram Cochrane
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Isabella Cochrane
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cochran
Son · 1940 · age 33 · b. ~1907 · New York
★ You are viewing this record
Sibling
Elizabeth Cochran
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fredrick Cochran
Sibling · 1940 · age 35
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 — Chautauqua-County, New York
Open full size
1940 US Federal Census — Chautauqua-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02512-00474)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David J. Cochran | 74 | Head | Farmer | New York |
| 2 | Isabelle J. Cochran | 67 | Wife | Partner | New York |
| 3 | Elizabeth H. Cochran | 37 | Daughter | Grade Teacher | New York |
| 4 | Fredrick Cochran | 35 | Son | Farmer | New York |
| 5 | William J. Cochran THIS PERSON | 33 | Son | Farmer | New York |
| 6 | John Nelson | 67 | Hired-man | Sailor | Norway |
| 7 | Floyd R. Wakeley | 45 | Head | Labourer | New York |
| 8 | Martha Wakeley | 37 | Wife | Housewife | New York |
| 9 | Vernon R. Wakeley | 15 | Son | Labourer | New York |
| 10 | Clarence E. Wakeley | 16 | Son | Labourer | New York |
| 11 | Ralph A. Wakeley | 12 | Son | — | New York |
| 12 | Mary E. Matherson | 56 | Head | Fruit Work | Pennsylvania |
| 13 | Effie Kelsey | 70 | Boarder | Labourer | New York |
| 14 | Trinton Paden | 24 | Boarder | Labourer | New York |
| 15 | Charles Hunt | 7 | Boarder | — | New York |
| 16 | Herman J. Brumagin | 70 | Head | Farmer | New York |
| 17 | Ada Brumagin | 71 | Wife | — | New York |
| 18 | Clyde H. Reardon | 46 | Head | Labourer | New York |
| 19 | Grace V. Reardon | 44 | Wife | Fruit | New York |
| 20 | William Reardon | 15 | Son | Labourer | New York |
| 21 | Clifford Emery | 32 | Head | Labourer | Pennsylvania |
| 22 | Marietta Emery | 33 | Wife | — | Pennsylvania |
| 23 | Geraldine Emery | 6 | Daughter | — | Pennsylvania |
| 24 | Norma Mae Emery | 5 | Daughter | — | Pennsylvania |
| 25 | Luella M. Emery | 4 | Daughter | — | Pennsylvania |
| 26 | Betty Louise Emery | 1 | Daughter | — | Pennsylvania |
| 27 | William Miller | 49 | Roomer | Labourer | United States |
| 28 | Raymond Walker | 27 | Head | Labourer | New York |
| 29 | Florence Walker | 19 | Wife | — | New York |
| 30 | Rosina Spataro | 35 | Aunt | Sleeper | New York |
| 31 | Harry Burrows | 15 | Cousin | New Worker | New York |
| 32 | Edward Hall | 60 | Head | Labourer | Pennsylvania |
| 33 | Ella Hall | 55 | Wife | Housewife | Pennsylvania |
| 34 | Evelyn A. Down | 60 | Head | Proprietor | Pennsylvania |
| 35 | Gloria M. Johnson | 10 | Grand Daughter | — | New York |
| 36 | Marlene E. Johnson | 3 | Grand Daughter | — | New York |
| 37 | Kinga Mccutcheon | 44 | Head | Farmer | New York |
| 38 | Elsie Mccutcheon | 35 | Wife | History Teacher | New York |
| 39 | Frank Mccutcheon | 41 | Head | Farmer | New York |
| 40 | Elsie Mccutcheon | 42 | Wife | — | New York |
Pedigree Summary
William + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)