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John Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this John Joyce across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 8-person household.
Age 25
b. ~1915
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | shipfitter |
| Industry | shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Shipfitter |
| Township / Ward | Chester |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Francis Joyce | Son | — | 12 | ~1928 |
| William Joyce | Son | — | 28 | ~1912 |
| John Joyce | Son | — | 25 | ~1915 |
| Edward Joyce | Son | — | 23 | ~1917 |
| Dolores Joyce | Daughter | — | 17 | ~1923 |
| Mary Joyce | Daughter | — | 29 | ~1911 |
| Catherine Joyce | Daughter | — | 19 | ~1921 |
| Anna Joyce | Head | — | 52 | ~1888 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 15
Philadelphia, Pennsylvania · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 25
Delaware-County, Pennsylvania · implied b. ~1915 — 8 household members
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Occupation | shipfitter |
| Industry | shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | Hs 4 |
| 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 25 · b. ~1915 · Pennsylvania
★ You are viewing this record
Sibling
Dolores Joyce
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Joyce
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Joyce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Joyce
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Joyce
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Joyce
Sibling · 1940 · age 12
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03488-00036)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Montgomery | 45 | Head | — | Pennsylvania |
| 42 | George Montgomery | 26 | Son | Pattern Maker | Pennsylvania |
| 43 | Lavinia Montgomery | 24 | Daughter | Secretary | Pennsylvania |
| 44 | Vernon Montgomery | 21 | Son | Bookkeeper | Pennsylvania |
| 45 | Edward Montgomery | 18 | Son | Electrician Helper | Pennsylvania |
| 46 | Shirley Montgomery | 15 | Daughter | — | Pennsylvania |
| 47 | Dorothy Montgomery | 8 | Daughter | — | Pennsylvania |
| 48 | Mary A. Matton | 72 | Mother | — | Northern Ireland |
| 49 | Louis Thomas | 33 | Head | Welding Leader | Pennsylvania |
| 50 | Ruth Thomas | 30 | Wife | — | Pennsylvania |
| 51 | Beverly Thomas | 11 | Daughter | — | Pennsylvania |
| 52 | Anna C. Joyce | 52 | Head | — | Pennsylvania |
| 53 | Mary Joyce | 29 | Daughter | Clerk & Typist | Pennsylvania |
| 54 | William C. Joyce | 28 | Son | Draftsman | Pennsylvania |
| 55 | John Joyce THIS PERSON | 25 | Son | Shipfitter | Pennsylvania |
| 56 | Edward Joyce | 23 | Son | Shipfitter | Pennsylvania |
| 57 | Catherine Joyce | 19 | Daughter | Apprentice Machine | Pennsylvania |
| 58 | Dolores Joyce | 17 | Daughter | New Worker | Pennsylvania |
| 59 | Francis Joyce | 12 | Son | — | Pennsylvania |
| 60 | Earl T. Johnson | 42 | Head | — | Pennsylvania |
| 61 | Margaret Johnson | 38 | Wife | Shipfitter | Virginia |
| 62 | Earl Johnson | 13 | Son | — | Pennsylvania |
| 63 | Margaret Johnson | 11 | Daughter | — | Pennsylvania |
| 64 | Catherine Ballentine | 57 | Mother-in-law | — | Pennsylvania |
| 65 | Haymon E. Newman | 57 | Head | — | Virginia |
| 66 | Mabel Newman | 46 | Wife | Elec. Welder | Virginia |
| 67 | Edgar Newman | 27 | Son | — | Virginia |
| 68 | Olivia Newman | 81 | Mother | Elec. Welder | Virginia |
| 69 | Albert Zarski | 27 | Head | — | Pennsylvania |
| 70 | Helen Zarski | 26 | Wife | Longshoreman | Pennsylvania |
| 71 | Peter Stukowicz | 49 | Father-in-law | — | Austria |
| 72 | Pauline Stukowicz | 48 | Mother-in-law | Laborer | Austria |
| 73 | Harry Stukowicz | 21 | Brother-in-law | — | Pennsylvania |
| 74 | Ann Stukowicz | 29 | Sister-in-law | Laborer | Ohio |
| 75 | Lawrence Maud | 43 | Head | — | Pennsylvania |
| 76 | Grace Maud | 36 | Wife | Cone Winder | Pennsylvania |
| 77 | Charles Maud | 14 | Son | Laborer | Pennsylvania |
| 78 | Harry Gilden | 22 | Lodger | — | Pennsylvania |
| 79 | Charles P. Mabus | 49 | Head | Laborer | Illinois |
| 80 | Mabus | None | — | 36 | — |
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)