MJ
Mary Joyce — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Joyce across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Margaret — first a daughter (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Waitress |
| Industry | Restaurant |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 780 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Waitress |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Agnes Joyce | Spouse | — | 52 | ~1888 |
| Martha Joyce | Daughter | — | 18 | ~1922 |
| James Joyce | Son | — | 19 | ~1921 |
| Mary Joyce | Daughter | — | 21 | ~1919 |
| Sarah Joyce | Daughter | — | 15 | ~1925 |
| John Joyce | Son | — | 24 | ~1916 |
| Joseph Joyce | Son | — | 25 | ~1915 |
| Catherine Joyce | Daughter | — | 13 | ~1927 |
| John Joyce | Head | — | 52 | ~1888 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age
Allegheny, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 21
Allegheny-County, Pennsylvania · implied b. ~1919 — 9 household members
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Waitress |
| Industry | Restaurant |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 780 |
| 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 Mary Joyce across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Joyce (~0.92 confidence) and mother Margaret Joyce (~0.92 confidence) and mother Agnes Joyce (~0.92 confidence) and father John Joyce (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Joyce
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Margaret Joyce
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Agnes Joyce
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
John Joyce
b. ~1888
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Joyce
Daughter · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
James Joyce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Joyce
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Joyce
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Joyce
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Joyce
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Joyce
Sibling · 1940 · age 24
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-t0627-03653-00194)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Angelina Caltagerone | 49 | Head | — | Italy |
| 42 | Anna Caltagerone | 25 | Daughter | Seamstress | Pennsylvania |
| 43 | Joseph Caltagerone | 21 | Son | Messenger | Pennsylvania |
| 44 | Frances Caltagerone | 19 | Daughter | Seamstress | Pennsylvania |
| 45 | Phyllis Caltagerone | 18 | Daughter | — | Pennsylvania |
| 46 | Samuel Caltagerone | 13 | Son | — | Pennsylvania |
| 47 | Vincent Bruscemi | 27 | Head | Truck Driver | Pennsylvania |
| 48 | Marion Bruscemi | 25 | Wife | — | Pennsylvania |
| 49 | Josephine Bruscemi | 6 | Daughter | — | Pennsylvania |
| 50 | Vincent Jr. Bruscemi | 1 | Son | — | Pennsylvania |
| 51 | John Kokoruda | 31 | Head | Foreman Casing | Pennsylvania |
| 52 | Anna Kokoruda | 31 | Wife | Baker | Austria |
| 53 | Geneva Kokoruda | 12 | Daughter | — | Pennsylvania |
| 54 | John Jr. Kokoruda | 10 | Son | — | Pennsylvania |
| 55 | Catherine Rubinich | 21 | Housekeeper | Housekeeper | Pennsylvania |
| 56 | John Joyce | 52 | Head | Laborer | Northern Ireland |
| 57 | Agnes Joyce | 52 | Wife | — | Northern Ireland |
| 58 | Joseph Joyce | 25 | Son | Crone Man | Pennsylvania |
| 59 | John Joyce | 24 | Son | Truck Driver | Pennsylvania |
| 60 | Mary Joyce THIS PERSON | 21 | Daughter | Waitress | Pennsylvania |
| 61 | James Joyce | 19 | Son | New Worker | Pennsylvania |
| 62 | Martha Jane Joyce | 18 | Daughter | — | Pennsylvania |
| 63 | Sarah Joyce | 15 | Daughter | — | Pennsylvania |
| 64 | Catherine Joyce | 13 | Daughter | — | Pennsylvania |
| 65 | Bernard Sands | 44 | Head | Foreman Laborer | Pennsylvania |
| 66 | Nora Sands | 41 | Wife | — | Pennsylvania |
| 67 | Bernice Sands | 17 | Daughter | — | Pennsylvania |
| 68 | Jerome Sands | 1 | Son | — | Pennsylvania |
| 69 | John Devlin | 56 | Head | Steam Shovel Operator | Penna. |
| 70 | Margaret Devlin | 54 | Wife | — | Penna. |
| 71 | George Chasar | 45 | Head | Maker Ice Cream | Czechoslovakia |
| 72 | Mary Chasar | 42 | Wife | — | Czechoslovakia |
| 73 | George Chasar | 20 | Son | New Worker | Pennsylvania |
| 74 | John Chasar | 17 | Son | — | Pennsylvania |
| 75 | Mary Ruth Chasar | 7 | Daughter | — | Pennsylvania |
| 76 | John L. Cain | 52 | Head | Steam Shovel Engineer | Kentucky |
| 77 | Mary A. Cain | 50 | Wife | — | Pennsylvania |
| 78 | John Cain | 26 | Son | Metallurgist Engineer | Pennsylvania |
| 79 | James M. Cain | 23 | Son | Grinder | Ohio |
| 80 | Mary C. Cain | 17 | Daughter | — | Pennsylvania |
Related Census Records
Pedigree Summary
Mary + 6 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)