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John Corcoran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ross-County, Ohio
Our Model Tree links this John Corcoran across the 1930 and 1940 US Censuses in Ross-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ross-County, Ohio |
| Surname | Corcoran |
| Given Name | John L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Scioto Twp |
| 1935 Residence (County) | Ross |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Scioto Twp |
| Est. Birth Year | ~1923 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Donald Corcoran | Son | — | 15 | ~1925 |
| Eileen Corcoran | Daughter | — | 9 | ~1931 |
| David Corcoran | Son | — | 6 | ~1934 |
| John Corcoran | Son | — | 17 | ~1923 |
| Florentine Corcoran | Spouse | — | 41 | ~1899 |
| John Corcoran | Head | — | 44 | ~1896 |
| Katherine Corcoran | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Ross, Ohio
Son, age 6
Ross, Ohio · implied b. ~1924 — 48 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | John E |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Ross-County, Ohio
Son, age 17
Ross-County, Ohio · implied b. ~1923 — 7 household members
| Surname | Corcoran |
| Given Name | John L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Scioto Twp |
| 1935 Residence (County) | Ross |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 17 · b. ~1923 · Ohio
★ You are viewing this record
Sibling
David Corcoran
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Corcoran
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Corcoran
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Corcoran
Sibling · 1940 · age 15
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 — Ross-County, Ohio
Open full size
1940 US Federal Census — Ross-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03138-00572)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy Conley | 6 | Son | — | Ohio |
| 42 | Nellie Conley | 4 | Daughter | — | Ohio |
| 43 | John P Corcoran | 44 | Head | Farmer | Ohio |
| 44 | Florentine Corcoran | 41 | Wife | — | Ohio |
| 45 | Katherine Corcoran | 18 | Daughter | — | Ohio |
| 46 | John L Corcoran THIS PERSON | 17 | Son | — | Ohio |
| 47 | Donald W Corcoran | 15 | Son | — | Ohio |
| 48 | Eileen M Corcoran | 9 | Daughter | — | Ohio |
| 49 | David J Corcoran | 6 | Son | — | Ohio |
| 50 | Andrew Jackson | 51 | Head | Labor | Ohio |
| 51 | Era Jackson | 34 | Wife | — | Ohio |
| 52 | Mary J Jackson | 14 | Daughter | — | Ohio |
| 53 | William Landrum | 40 | Head | Farmer | Ohio |
| 54 | Zola Landrum | 35 | Wife | — | Ohio |
| 55 | Altha Landrum | 33 | Daughter | Teaching | Ohio |
| 56 | Dale E Brown | 25 | Head | Shoe Worker | Ohio |
| 57 | Annabelle Brown | 27 | Wife | — | Ohio |
| 58 | Robert Brown | 1 | Son | — | Ohio |
| 59 | Harvey Steward | 53 | Head | Brakeman | Ohio |
| 60 | Maude Steward | 42 | Wife | — | Ohio |
| 61 | Elizabeth Mckee | 20 | Daughter | — | Ohio |
| 62 | Harry Steward | 15 | Son | — | Ohio |
| 63 | Willard Steward | 18 | Brother | — | Ohio |
| 64 | Donald Holt | 21 | Head | Shoe Worker | Ohio |
| 65 | Hellen N Holt | 20 | Wife | — | Ohio |
| 66 | Mary N Holt | 3 | Daughter | — | Ohio |
| 67 | Louis Trago | 30 | Head | Labor | Ohio |
| 68 | Ruth Trago | 32 | Wife | — | Ohio |
| 69 | Louis Jr Trago | 10 | Son | — | Ohio |
| 70 | David F Lancaster | 51 | Head | Finisher | W-Va |
| 71 | Bessie Lancaster | 48 | Wife | — | Ohio |
| 72 | Vivian Lancaster | 26 | Daughter | Finisher | Ohio |
| 73 | Albert Lancaster | 18 | Son | — | Ohio |
| 74 | Alice Lancaster | 9 | Daughter | — | Ohio |
| 75 | James Maxson | 30 | Head | Boiler Operator | Ohio |
| 76 | Rubey Maxson | 25 | Wife | — | Ohio |
| 77 | James Jr Maxson | 7 | Son | — | Ohio |
| 78 | Carol J Maxson | 5 | Daughter | — | Ohio |
| 79 | Marol J Maxson | 1 | Daughter | — | Ohio |
| 80 | Clarence R Wade | 61 | Head | Mail Clerk | W-Va |
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)