MJ
Mary Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Westmoreland-County, Pennsylvania
Our Model Tree links this Mary Joyce across the 1930 and 1940 US Censuses in Westmoreland-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Westmoreland-County, Pennsylvania |
| Surname | Joyce |
| Given Name | Mary T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ardara |
| 1935 Residence (County) | Westmoreland |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Ardara |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Gerald Joyce | Son | — | 23 | ~1917 |
| Mary Joyce | Spouse | — | 49 | ~1891 |
| Matthew Joyce | Son | — | 14 | ~1926 |
| Patrick Joyce | Son | — | 21 | ~1919 |
| Anna Joyce | Daughter | — | 12 | ~1928 |
| Joseph Joyce | Son | — | 10 | ~1930 |
| Mary Joyce | Daughter | — | 18 | ~1922 |
| John Joyce | Son | — | 16 | ~1924 |
| John Joyce | Head | — | 63 | ~1877 |
Census Appearances
1930
Westmoreland, Pennsylvania
Daughter, age 8
Westmoreland, Pennsylvania · implied b. ~1922 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Westmoreland-County, Pennsylvania
Daughter, age 18
Westmoreland-County, Pennsylvania · implied b. ~1922 — 9 household members
| Surname | Joyce |
| Given Name | Mary T. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ardara |
| 1935 Residence (County) | Westmoreland |
| Highest Grade | H-3 |
| 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 Mary Joyce across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Joyce
Daughter · 1940 · age 18 · b. ~1922 · Pennsylvania
★ You are viewing this record
Sibling
Patrick Joyce
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Joyce
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Joyce
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Matthew Joyce
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Joyce
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Joyce
Sibling · 1940 · age 23
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 — Westmoreland-County, Pennsylvania
Open full size
1940 US Federal Census — Westmoreland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03636-00165)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clarence Mccormick | 22 | Son | Attendant | Pennsylvania |
| 2 | George W. Miller | 55 | Head | Coil Winder | Pennsylvania |
| 3 | Bessie C. Miller | 57 | Wife | — | Pennsylvania |
| 4 | Esther M. Miller | 27 | Daughter | — | Pennsylvania |
| 5 | Laura B. Miller | 21 | Daughter | — | Pennsylvania |
| 6 | Arthur R. Miller | 47 | Brother | Coil Winder | Pennsylvania |
| 7 | Arthur B. Tourtelet | 49 | Head | Designer | Ohio |
| 8 | Rebecca R. Tourtelet | 44 | Wife | — | Rhode Island |
| 9 | Gilbert B. Tourtelet | 17 | Son | — | Pennsylvania |
| 10 | Margaret L. Tourtelet | 14 | Daughter | — | California |
| 11 | Louise Tourtelet | 13 | Daughter | — | California |
| 12 | John C. Joyce | 63 | Head | Carpenter | Ireland |
| 13 | Mary G. Joyce | 49 | Wife | — | Pennsylvania |
| 14 | Gerald J. Joyce | 23 | Son | — | Pennsylvania |
| 15 | Patrick D. Joyce | 21 | Son | New Worker | Pennsylvania |
| 16 | Mary T. Joyce THIS PERSON | 18 | Daughter | — | Pennsylvania |
| 17 | John Joyce | 16 | Son | — | Pennsylvania |
| 18 | Matthew Joyce | 14 | Son | — | Pennsylvania |
| 19 | Anna M. Joyce | 12 | Daughter | — | Pennsylvania |
| 20 | Joseph A. Joyce | 10 | Son | — | Pennsylvania |
| 21 | John Sr. Roscoe | 51 | Head | Laborer | Austria |
| 22 | Mary Roscoe | 18 | Daughter | — | Pennsylvania |
| 23 | John Jr. Roscoe | 15 | Son | — | Pennsylvania |
| 24 | Rudolph G. Roscoe | 12 | Son | — | Pennsylvania |
| 25 | Agene Mushettie | 17 | Daughter | — | Pennsylvania |
| 26 | Charles J. Mushettie | 0 | Grandson | — | Ohio |
| 27 | William H. Kline | 46 | Head | Car Repairman | Pennsylvania |
| 28 | Mary A. Kline | 42 | Wife | — | Illinois |
| 29 | William G. Jr. Kline | 21 | Son | Coil Winder | Pennsylvania |
| 30 | Donald R. Kline | 18 | Son | New Worker | Pennsylvania |
| 31 | John S. Sr. Mertz | 44 | Head | Car Repairman | Pennsylvania |
| 32 | Elva M. Mertz | 42 | Wife | — | Pennsylvania |
| 33 | Meredith L. Mertz | 20 | Daughter | New Worker | Pennsylvania |
| 34 | John S. Jr. Mertz | 15 | Son | New Worker | Pennsylvania |
| 35 | Edgar F. Mertz | 15 | Son | — | Pennsylvania |
| 36 | Lois J. Mertz | 12 | Daughter | — | Pennsylvania |
| 37 | Ronald L. Mertz | 10 | Son | — | Pennsylvania |
| 38 | Richard L. Mertz | 8 | Son | — | Pennsylvania |
| 39 | Donna M. Mertz | 6 | Daughter | — | Pennsylvania |
| 40 | Joseph W. Kline | 40 | Head | Laborer | Pennsylvania |
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)