JC
James Cannon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Cannon across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 7-person household.
Age 10
b. ~1930
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cannon |
| Given Name | James W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Oakmont |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Penn Twp |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Martha Cannon | Daughter | — | 5 | ~1935 |
| Joseph Cannon | Son | — | 6 | ~1934 |
| J Cannon | Head | — | 35 | ~1905 |
| James Cannon | Son | — | 10 | ~1930 |
| Mary Cannon | Spouse | — | 33 | ~1907 |
| Margaret Snyder | Daughter | — | 37 | ~1903 |
| Mary Cannon | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cannon |
| Given Name | James W Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 10
Allegheny-County, Pennsylvania · implied b. ~1930 — 7 household members
| Surname | Cannon |
| Given Name | James W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Oakmont |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 5 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Cannon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cannon
Son · 1940 · age 10 · b. ~1930 · Pennsylvania
★ You are viewing this record
Sibling
Joseph Cannon
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Cannon
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Snyder
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Cannon
Sibling · 1940 · age 9
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03414-00598)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elva Mae Mills | 13 | Daughter | — | Pennsylvania |
| 2 | Thomas Pickering | 65 | Head | Laborer | Pennsylvania |
| 3 | Ada Pickering | 54 | Wife | — | Pennsylvania |
| 4 | Charles A. Painter | 41 | Head | — | Pennsylvania |
| 5 | Elsie E. Painter | 39 | Wife | — | Pennsylvania |
| 6 | June Painter | 14 | Daughter | — | Pennsylvania |
| 7 | Charles Painter | 12 | Son | — | Pennsylvania |
| 8 | Hazel Painter | 9 | Daughter | — | Pennsylvania |
| 9 | Elsie Mae Painter | 6 | Daughter | — | Pennsylvania |
| 10 | James Whelan | 62 | Head | Street Car Motor-Man | New York |
| 11 | Paul Meininger | 31 | Head | Street Car Motor-Man | Pennsylvania |
| 12 | Ethel Meininger | 28 | Wife | — | Pennsylvania |
| 13 | Mary Ann Meininger | 3 | Daughter | — | Pennsylvania |
| 14 | James Cakewood | Eskerwood | 77 | Lodger | — | England |
| 15 | J. W. Cannon | 35 | Head | Insurance Man | Pennsylvania |
| 16 | Mary E. Cannon | 33 | Wife | — | Pennsylvania |
| 17 | James W. Jr. Cannon THIS PERSON | 10 | Son | — | Pennsylvania |
| 18 | Mary Ann P. Cannon | 9 | Daughter | — | Pennsylvania |
| 19 | Joseph Albert Cannon | 6 | Son | — | Pennsylvania |
| 20 | Martha Ruth Cannon | 5 | Daughter | — | Pennsylvania |
| 21 | Margaret A. Snyder | 37 | Daughter | Teacher | Pennsylvania |
| 22 | W. Snyder | 63 | Head | Insurance | Pennsylvania |
| 23 | Helen H. Snyder | 58 | Wife | — | Pennsylvania |
| 24 | John Schwarzel | 55 | Head | Farmer | Pennsylvania |
| 25 | Minnie Schwarzel | 54 | Wife | — | Pennsylvania |
| 26 | Kenneth Schwarzel | 27 | Son | Clerk | Pennsylvania |
| 27 | Marjorie Schwarzel | 17 | Daughter | — | Pennsylvania |
| 28 | Alice Schwarzel | 15 | Daughter | — | Pennsylvania |
| 29 | Howard L. Mckee | 51 | Head | Disbursement Clerk | Pennsylvania |
| 30 | Bessie C. Mckee | 51 | Wife | — | Pennsylvania |
| 31 | Hilmer S. Mason | 42 | Head | Insurance Agent | Pennsylvania |
| 32 | Marie H. Mason | 43 | Wife | — | Pennsylvania |
| 33 | Hilmer R. Mason | 13 | Son | — | Pennsylvania |
| 34 | David L. Mason | 10 | Son | — | Pennsylvania |
| 35 | Benjamin J. Mason | 7 | Son | — | Pennsylvania |
| 36 | Agnes R. Mason | 5 | Daughter | — | Pennsylvania |
| 37 | Frank M. Whitten | 49 | Head | Clerk | Pennsylvania |
| 38 | Marion M. Whitten | 48 | Wife | — | Pennsylvania |
| 39 | Robert M. Linnamond | 34 | Head | Employee | Pennsylvania |
| 40 | Cecelia F. Linnamond | 33 | Wife | — | 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)