MJ
Mary Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Mary Joyce across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 3-person household.
Age 58
b. ~1882
Female
Head
Born: Michigan
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1882 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Joyce | Head | — | 58 | ~1882 |
| John Maddigan | Other | — | 41 | ~1899 |
| Helen Joyce | Daughter | — | 27 | ~1913 |
Census Appearances
1920
Erie, New …
Spouse, age 38
Erie, New York · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Canada |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Erie, New …
Spouse, age 48
Erie, New York · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 21 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Erie-County, New …
Head, age 58
Erie-County, New York · implied b. ~1882 — 3 household members
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Buffalo City |
| 1935 Residence (County) | Erie |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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
Head · 1940 · age 58 · b. ~1882 · New York
★ 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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02824-00333)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sophie Peter | 34 | Wife | — | New York |
| 42 | George Mock | 46 | Head | Metal Polisher | New York |
| 43 | Gertrude Mock | 43 | Wife | — | New York |
| 44 | George Jr. Mock | 19 | Son | Unloader | New York |
| 45 | John Cliffin | 29 | Boarder | Guardsman | New York |
| 46 | Gertrude Cliffin | 21 | Daughter | Sales Clerk | New York |
| 47 | Johanna Groves | 68 | Head | — | Germany |
| 48 | Philip J. Miller | 36 | Son | Credit Manager | New York |
| 49 | Ada J. Miller | 35 | Daughter | — | New York |
| 50 | Gilbert Brockner | 37 | Head | Draftsman | New York |
| 51 | Eleanor Brockner | 37 | Wife | — | New York |
| 52 | Gilbert Jr. Brockner | 7 | Son | — | New York |
| 53 | Justus Alexander | 54 | Head | Car Repairman | New York |
| 54 | Grace D. Alexander | 57 | Wife | — | New York |
| 55 | Francis Alexander | 28 | Son | Salesman | New York |
| 56 | Gerald Alexander | 15 | Son | — | New York |
| 57 | Mary Magner | 53 | Head | — | New York |
| 58 | John Magner | 25 | Son | Asst. Manager | New York |
| 59 | Rita Magner | 23 | Daughter | Retail Investigator | New York |
| 60 | Thomas Magner | 21 | Son | — | New York |
| 61 | Patricia Magner | 19 | Daughter | — | New York |
| 62 | William Magner | 17 | Son | — | New York |
| 63 | James Mahoney | 37 | Head | Foreman | New York |
| 64 | Nora Mahoney | 36 | Wife | — | New York |
| 65 | Mary Mahoney | 6 | Daughter | — | New York |
| 66 | Nancy Mahoney | 4 | Daughter | — | New York |
| 67 | Carol Mahoney | 2 | Daughter | — | New York |
| 68 | Mary Joyce THIS PERSON | 58 | Head | — | Michigan |
| 69 | Helen Joyce | 27 | Daughter | Substitute Teacher | New York |
| 70 | John Maddigan | 41 | Roomer | Accountant | New York |
| 71 | Jesse Newton | 33 | Head | — | New York |
| 72 | Robert Newton | 6 | Son | — | New York |
| 73 | Oscar Bailey | 44 | Head | Brakeman | Illinois |
| 74 | Bessie Bailey | 44 | Wife | — | New York |
| 75 | Flora Bailey | 20 | Daughter | — | New York |
| 76 | Louis Pier | 43 | Head | Supply Clerk | New York |
| 77 | Edna Pier | 38 | Wife | — | New York |
| 78 | Irene Pier | 14 | Daughter | — | New York |
| 79 | Marvin Pier | 11 | Son | — | New York |
| 80 | Edward Linear | 45 | Head | Freight Conductor | New York |
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)