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John Corcoran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Anne-Arundel-County, Maryland
Our Model Tree links this John Corcoran across the 1930 and 1940 US Censuses in Anne-Arundel-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 10-person household.
Age 10
b. ~1930
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Anne-Arundel-County, Maryland |
| Surname | Corcoran |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Anne Arundel |
| Additional Details | |
| Highest Grade | No 2 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 13Th Election District |
| Est. Birth Year | ~1930 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Patrick Corcoran | Son | — | 7 | ~1933 |
| John Corcoran | Head | — | 35 | ~1905 |
| Thomas Corcoran | Son | — | 9 | ~1931 |
| Daniel Corcoran | Son | — | 6 | ~1934 |
| Margaret Corcoran | Daughter | — | 4 | ~1936 |
| John Corcoran | Son | — | 10 | ~1930 |
| Maureen Corcoran | Daughter | — | 5 | ~1935 |
| Lawrence Corcoran | Son | — | 3 | ~1937 |
| Elizabeth Corcoran | Spouse | — | 25 | ~1915 |
| Edward Corcoran | Son | — | 1 | ~1939 |
Census Appearances
1930
Baltimore, Maryland
Son, age
Baltimore, Maryland · implied b. ~1930 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corcoran |
| Given Name | John T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Anne-Arundel-County, Maryland
Son, age 10
Anne-Arundel-County, Maryland · implied b. ~1930 — 10 household members
| Surname | Corcoran |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Anne Arundel |
| Highest Grade | No 2 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 10 · b. ~1930 · Maryland
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Sibling
Patrick Corcoran
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Corcoran
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Corcoran
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Corcoran
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maureen Corcoran
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Corcoran
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Corcoran
Sibling · 1940 · age 3
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 — Anne-Arundel-County, Maryland
Open full size
1940 US Federal Census — Anne-Arundel-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01501-00841)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Melita | 48 | Wife | — | Italy |
| 2 | Joseph Jr. Melita | 30 | Son | Laborer | Maryland |
| 3 | Rocco Melita | 24 | Son | Laborer | Maryland |
| 4 | Frances Melita | 22 | Daughter | Maid | Maryland |
| 5 | Celia Melita | 16 | Daughter | — | Maryland |
| 6 | Salvador Melita | 12 | Son | — | Maryland |
| 7 | Donald Melita | 9 | Son | — | Maryland |
| 8 | John Fairchild | 53 | Head | — | Poland |
| 9 | Carrie Fairchild | 51 | Wife | — | Poland |
| 10 | Paul Fairchild | 25 | Son | — | Maryland |
| 11 | Andrew Fairchild | 22 | Son | Laborer | Maryland |
| 12 | Frank Fairchild | 20 | Son | Laborer | Maryland |
| 13 | Anna Fairchild | 15 | Daughter | — | Maryland |
| 14 | Casmer Fairchild | 14 | Son | — | Maryland |
| 15 | Antoinette Fairchild | 11 | Daughter | — | Maryland |
| 16 | Vincent Wancowicz | 27 | Head | Shipping Clerk | Maryland |
| 17 | Elizabeth Wancowicz | 30 | Wife | — | Maryland |
| 18 | Dorothy Wancowicz | 2 | Daughter | — | Maryland |
| 19 | Joseph S. Mohring | 39 | Head | Painter | Maryland |
| 20 | Dorothy V. Mohring | 35 | Wife | — | Maryland |
| 21 | Joseph Jr. Mohring | 13 | Son | — | Maryland |
| 22 | Marie Mohring | 12 | Daughter | — | Maryland |
| 23 | Gilbert Mohring | 10 | Son | — | Maryland |
| 24 | Janet Mohring | 9 | Daughter | — | Maryland |
| 25 | Bernard Mohring | 6 | Son | — | Maryland |
| 26 | Bernadine Mohring | 6 | Daughter | — | Maryland |
| 27 | David Mohring | 4 | Son | — | Maryland |
| 28 | Joan Mohring | 3 | Daughter | — | Maryland |
| 29 | John J. Corcoran | 35 | Head | Crane Operator | Pennsylvania |
| 30 | Elizabeth Corcoran | 25 | Wife | — | Maryland |
| 31 | John Jr. Corcoran THIS PERSON | 10 | Son | — | Maryland |
| 32 | Thomas Corcoran | 9 | Son | — | Maryland |
| 33 | Patrick Corcoran | 7 | Son | — | Maryland |
| 34 | Daniel Corcoran | 6 | Son | — | Maryland |
| 35 | Maureen Corcoran | 5 | Daughter | — | Maryland |
| 36 | Margaret Corcoran | 4 | Daughter | — | Maryland |
| 37 | Lawrence Corcoran | 3 | Son | — | Maryland |
| 38 | Edward Corcoran | 1 | Son | — | Maryland |
| 39 | Joseph Glodich | 61 | Head | Farmer | Austria |
| 40 | Magdeline Glodich | 59 | Wife | — | Austria |
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)