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John Corcoran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Yolo-County, California
Our Model Tree links this John Corcoran across the 1930 and 1940 US Censuses in Yolo-County, California (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 13-person household.
Age 19
b. ~1921
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Yolo-County, California |
| Surname | Corcoran |
| Given Name | John Henry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Woodland Township |
| 1935 Residence (County) | Yolo |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Woodland Township |
| Est. Birth Year | ~1921 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Kathleen Corcoran | Daughter | — | 6 | ~1934 |
| Joseph Corcoran | Son | — | 13 | ~1927 |
| John Corcoran | Son | — | 19 | ~1921 |
| James Corcoran | Son | — | 18 | ~1922 |
| Margaret Corcoran | Daughter | — | 12 | ~1928 |
| Anna Corcoran | Daughter | — | 5 | ~1935 |
| Charles Corcoran | Son | — | 7 | ~1933 |
| Nora Corcoran | Spouse | — | 41 | ~1899 |
| Helen Corcoran | Daughter | — | 3 | ~1937 |
| John Corcoran | Head | — | 51 | ~1889 |
| Daniel Corcoran | Son | — | ~1940 | |
| Robert Corcoran | Son | — | 10 | ~1930 |
| Mary Corcoran | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Yolo, California
Son, age 9
Yolo, California · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | John H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Yolo-County, California
Son, age 19
Yolo-County, California · implied b. ~1921 — 13 household members
| Surname | Corcoran |
| Given Name | John Henry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Woodland Township |
| 1935 Residence (County) | Yolo |
| Industry | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 John Corcoran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Corcoran
Son · 1940 · age 19 · b. ~1921 · California
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Sibling
Robert Corcoran
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Corcoran
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Corcoran
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Corcoran
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Corcoran
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Corcoran
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Corcoran
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Corcoran
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Corcoran
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Corcoran
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 — Yolo-County, California
Open full size
1940 US Federal Census — Yolo-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00366-00741)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Jr. Lieferman | 13 | Son | — | California |
| 42 | Leah Mae Lieferman | 11 | Daughter | — | California |
| 43 | John W. Saunders | 33 | Head | Dairyman | Arizona |
| 44 | Viola Fay Saunders | 46 | Wife | — | California |
| 45 | Lorna Leslie Saunders | 21 | Daughter | — | California |
| 46 | Frances Eileen Saunders | 20 | Daughter | — | California |
| 47 | Milton James | 25 | Head | Farmer | California |
| 48 | Ella James | 20 | Wife | — | California |
| 49 | Robert James | 1 | Son | — | California |
| 50 | Percy Wilkendorf | 32 | Head | Farmer | California |
| 51 | Alice Wilkendorf | 29 | Wife | — | English Canada |
| 52 | Robert Wilkendorf | 5 | Son | — | California |
| 53 | Stanley Wilkendorf | 1 | Son | — | California |
| 54 | Glenn Hutchings | 22 | Head | Laborer | California |
| 55 | John W. Corcoran | 51 | Head | Farmer | Irish Free State |
| 56 | Nora May Corcoran | 41 | Wife | — | California |
| 57 | John Henry Corcoran THIS PERSON | 19 | Son | — | California |
| 58 | James Edward Corcoran | 18 | Son | — | California |
| 59 | Mary Aileen Corcoran | 16 | Daughter | — | California |
| 60 | Joseph Albert Corcoran | 13 | Son | — | California |
| 61 | Margaret Louise Corcoran | 12 | Daughter | — | California |
| 62 | Robert William Corcoran | 10 | Son | — | California |
| 63 | Charles Harvey Corcoran | 7 | Son | — | California |
| 64 | Kathleen Alde Corcoran | 6 | Daughter | — | California |
| 65 | Anna May Corcoran | 5 | Daughter | — | California |
| 66 | Helen Nadine Corcoran | 3 | Daughter | — | California |
| 67 | Daniel Ward Corcoran | 0 | Son | — | California |
| 68 | Philander M. Shade | 47 | Head | Cattle Man | New York |
| 69 | Mich. Teranishi | 43 | Head | Farmer | Japan |
| 70 | Masayo Teranishi | 40 | Wife | — | Japan |
| 71 | Hanako Teranishi | 15 | Daughter | — | California |
| 72 | Chiyoko Teranishi | 13 | Daughter | — | California |
| 73 | Akiko Teranishi | 6 | Daughter | — | California |
| 74 | Weldon K. Wirth | 33 | Head | Farmer | California |
| 75 | Freda Wirth | 25 | Wife | — | California |
| 76 | John Wirth | 2 | Son | — | California |
| 77 | Edward J. Evans | 37 | Head | Farmer | California |
| 78 | Minnie F. Evans | 34 | Wife | — | Arkansas |
| 79 | Sarah Anne Evans | 4 | Daughter | — | California |
| 80 | Sandra Jean Evans | 2 | Daughter | — | California |
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)