MJ
Mary Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Joyce across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 6-person household.
Age 53
b. ~1887
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1887 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Joyce | Spouse | — | 53 | ~1887 |
| Mary Joyce | Daughter | — | 16 | ~1924 |
| Robert Joyce | Son | — | 17 | ~1923 |
| James Joyce | Son | — | 8 | ~1932 |
| Patrick Joyce | Head | — | 49 | ~1891 |
| Cecelia Campbell | Other | — | 30 | ~1910 |
Census Appearances
1920
Cook, Illinois
Spouse, age 30
Cook, Illinois · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1903 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Spouse, age 39
Cook, Illinois · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Spouse, age 53
Cook-County, Illinois · implied b. ~1887 — 6 household members
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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.
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This person
Anchor record
Mary Joyce
Spouse · 1940 · age 53 · b. ~1887 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00996-00838)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Mcauliffe | 52 | Father-in-law | Auditor | Illinois |
| 2 | Patrick J. Joyce | 49 | Head | Salesman | Ireland |
| 3 | Mary Joyce THIS PERSON | 53 | Wife | — | Ireland |
| 4 | Robert Joyce | 17 | Son | — | Illinois |
| 5 | Mary C. Joyce | 16 | Daughter | — | Illinois |
| 6 | James K. Joyce | 8 | Son | — | Illinois |
| 7 | Cecelia Campbell | 30 | Sister-in-law | Stenographer | Free State |
| 8 | Roger Mcfadden | 38 | Head | Bartender | Utah |
| 9 | Helen Mcfadden | 34 | Wife | — | Iowa |
| 10 | Edward Mcfadden | 13 | Son | — | Illinois |
| 11 | William Mcfadden | 11 | Son | — | Illinois |
| 12 | Patrick Mcfadden | 7 | Son | — | Illinois |
| 13 | James Mcfadden | 6 | Son | — | Illinois |
| 14 | Shirley Mcfadden | 5 | Daughter | — | Illinois |
| 15 | Robert Mcfadden | 1 | Son | — | Illinois |
| 16 | Nellie Blount | 60 | Mother-in-law | Waiter | Iowa |
| 17 | Sarah O'Brien | 44 | Head | Janitress | Michigan |
| 18 | Mary O'Brien | 17 | Daughter | — | Illinois |
| 19 | Edward O'Brien | 16 | Son | — | Illinois |
| 20 | Eileen O'Brien | 12 | Daughter | — | Illinois |
| 21 | Robert O'Brien | 9 | Son | — | Illinois |
| 22 | Jack O'Brien | 4 | Son | — | Illinois |
| 23 | Julia Joyce | 41 | Sister | — | Michigan |
| 24 | Mary Joyce | 17 | Niece | — | Illinois |
| 25 | Gordon Joyce | 16 | Nephew | — | Illinois |
| 26 | Dorothy Joyce | 14 | Niece | — | Illinois |
| 27 | Mary Healy | 70 | Head | — | Illinois |
| 28 | Agnes Murphy | 66 | Sister | — | Illinois |
| 29 | Howard Allerton | 52 | Head | Car Foreman | Michigan |
| 30 | Mae Allerton | 53 | Wife | — | Illinois |
| 31 | Dorothy Allerton | 24 | Daughter | Stenographer | Illinois |
| 32 | Howard Allerton | 20 | Son | Laborer | Illinois |
| 33 | Phillip Mattia | 35 | Head | Foreman | Italy |
| 34 | Lydia Mattia | 32 | Wife | — | Italy |
| 35 | Barbara Mattia | 3 | Daughter | — | Illinois |
| 36 | Maurice Maloney | 41 | Head | Shipping Clerk | Illinois |
| 37 | Marie Maloney | 40 | Wife | — | Illinois |
| 38 | Marie Rita Maloney | 8 | Daughter | — | Illinois |
| 39 | William Maloney | 5 | Son | — | Illinois |
| 40 | Mary Maloney | 75 | Mother | — | Michigan |
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)