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John Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Joyce across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Gertrude Joyce | Daughter | — | 5 | ~1935 |
| John Joyce | Son | — | 16 | ~1924 |
| Nora Joyce | Daughter | — | 19 | ~1921 |
| James Joyce | Son | — | 13 | ~1927 |
| Michael Joyce | Head | — | 44 | ~1896 |
| Gertrude Joyce | Spouse | — | 39 | ~1901 |
| Bernice Joyce | Daughter | — | 10 | ~1930 |
| Michael Joyce | Son | — | 3 | ~1937 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1924 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 16
Allegheny-County, Pennsylvania · implied b. ~1924 — 8 household members
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| 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 John Joyce across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Joyce
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
★ You are viewing this record
Sibling
James Joyce
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Joyce
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nora Joyce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Joyce
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Joyce
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 — 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-t0627-03661-00299)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Booth | 66 | Mother | — | Pennsylvania |
| 2 | Kate Holland | 73 | Head | — | Pennsylvania |
| 3 | Alice Holland | 79 | Sister | — | Ohio |
| 4 | Elizabeth Holland | 76 | Sister | — | West Virginia |
| 5 | Alex Saar | 55 | Head | — | Pennsylvania |
| 6 | Thomas Roach | 55 | Head | Coil Presser | Ireland |
| 7 | Joseph Roach | 24 | Son | Coil Maker | Pennsylvania |
| 8 | Thomas Jr. Roach | 21 | Son | Handy Man | Pennsylvania |
| 9 | Julia Huber | 52 | Head | — | Pennsylvania |
| 10 | Patricia Fowler | 5 | Boarder | — | Pennsylvania |
| 11 | Mildred J. Bueno | 40 | Head | Seamstress | Pennsylvania |
| 12 | Mildred Bueno | 20 | Daughter | — | Pennsylvania |
| 13 | Michael Joyce | 44 | Head | Automobile Mechanic | Pennsylvania |
| 14 | Gertrude M. Joyce | 39 | Wife | — | Pennsylvania |
| 15 | Nora R. Joyce | 19 | Daughter | Pressman | Pennsylvania |
| 16 | John Joyce THIS PERSON | 16 | Son | — | Pennsylvania |
| 17 | James Joyce | 13 | Son | — | Pennsylvania |
| 18 | Bernice Joyce | 10 | Daughter | — | Pennsylvania |
| 19 | Gertrude Joyce | 5 | Daughter | — | Pennsylvania |
| 20 | Michael Jr. Joyce | 3 | Son | — | Pennsylvania |
| 21 | Patrick J. Donahue | 77 | Head | Retired | Ireland |
| 22 | Mary E. Donahue | 75 | Wife | — | Ireland |
| 23 | Mary Donahue | 43 | Daughter | — | Pennsylvania |
| 24 | Helen C. Donahue | 39 | Daughter | — | Pennsylvania |
| 25 | Edward J. Nunnery | 36 | Son in law | City Clerk | Pennsylvania |
| 26 | Nora Nunnery | 35 | Daughter | — | Pennsylvania |
| 27 | Mary M. Nunnery | 1 | Daughter | — | Pennsylvania |
| 28 | Ray H. Donaldson | 39 | Head | Steam Fitter | Pennsylvania |
| 29 | Elizabeth Donaldson | 35 | Wife | Steam Fitter | Pennsylvania |
| 30 | Raymond E. Donaldson | 5 | Son | — | Pennsylvania |
| 31 | Oscar Windish | 36 | Boarder | Laborer | Pennsylvania |
| 32 | Anna Rolle | 52 | Head | House Keeper | Pennsylvania |
| 33 | Lester Rolle | 27 | Son | Laborer | Pennsylvania |
| 34 | Grace Rolle | 20 | Daughter | — | Pennsylvania |
| 35 | George Buckley | 26 | Head | Service Man | Pennsylvania |
| 36 | Elizabeth Buckley | 25 | Wife | Sales Clerk | Pennsylvania |
| 37 | Albert Warnella | 25 | Head | Steel Man | Pennsylvania |
| 38 | Patricia Warnella | 24 | Wife | Waitress | Pennsylvania |
| 39 | Nellie Talley | 66 | Head | — | Pennsylvania |
| 40 | Lawrence Davis | 37 | Son in law | Accountant | 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)