MJ
Mary Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Joyce across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 10-person household.
Age 26
b. ~1914
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Ward Maid |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 90 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Ward Maid |
| Township / Ward | Boston City |
| Est. Birth Year | ~1914 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Joyce | Son | — | 17 | ~1923 |
| Theresa Joyce | Daughter | — | 10 | ~1930 |
| Margaret Joyce | Daughter | — | 14 | ~1926 |
| Helen Joyce | Daughter | — | 14 | ~1926 |
| Mary Joyce | Daughter | — | 26 | ~1914 |
| Anna Joyce | Daughter | — | 18 | ~1922 |
| Anna Joyce | Spouse | — | 47 | ~1893 |
| Michael Joyce | Head | — | 57 | ~1883 |
| John Joyce | Son | — | 19 | ~1921 |
| Michael Joyce | Son | — | 13 | ~1927 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 15
Suffolk, Massachusetts · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Packer |
| Industry | Candy Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 26
Suffolk-County, Massachusetts · implied b. ~1914 — 10 household members
| Surname | Joyce |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Ward Maid |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 90 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 26 · b. ~1914 · Massachusetts
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Sibling
Anna Joyce
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Joyce
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Joyce
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Joyce
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Joyce
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Joyce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Joyce
Sibling · 1940 · age 13
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01668-00039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Louise Kelley | 63 | Head | — | Irish Free State |
| 42 | Louise Kelley | 43 | Daughter | Seamstress | Massachusetts |
| 43 | Dennis Mclaughlin | 57 | Head | Contractor | Massachusetts |
| 44 | Anna M. Mclaughlin | 42 | Wife | — | New York |
| 45 | Alice Mclaughlin | 19 | Daughter | Sales Girl | Massachusetts |
| 46 | Christine Ford | 26 | Head | Seamstress | Massachusetts |
| 47 | Edward Ford | 4 | Son | — | Massachusetts |
| 48 | John Albert Prive | 33 | Head | Laborer | Vermont |
| 49 | Flora Prive | 27 | Wife | — | Maine |
| 50 | Patricia Prive | 7 | Daughter | — | Maine |
| 51 | Michael Joyce | 57 | Head | Laborer | Irish Free State |
| 52 | Anna Joyce | 47 | Wife | — | Irish Free State |
| 53 | Mary Joyce THIS PERSON | 26 | Daughter | Ward Maid | Massachusetts |
| 54 | John Joyce | 19 | Son | — | Massachusetts |
| 55 | Anna Joyce | 18 | Daughter | House Work | Massachusetts |
| 56 | Thomas Joyce | 17 | Son | — | Massachusetts |
| 57 | Helen Joyce | 14 | Daughter | — | Massachusetts |
| 58 | Margaret Joyce | 14 | Daughter | — | Massachusetts |
| 59 | Michael Joyce | 13 | Son | — | Massachusetts |
| 60 | Theresa Joyce | 10 | Daughter | — | Massachusetts |
| 61 | Theresa Rivers | 39 | Head | — | Massachusetts |
| 62 | Walter Rivers | 25 | Son | Laborer | Massachusetts |
| 63 | Mildred Rivers | 18 | Daughter | — | Massachusetts |
| 64 | Frank Cramer | 53 | Head | Laborer | Massachusetts |
| 65 | Helen Cramer | 62 | Wife | — | Massachusetts |
| 66 | John Crimmins | 62 | Head | — | Irish Free State |
| 67 | Mary Crimmins | 40 | Daughter | — | Massachusetts |
| 68 | Dennis Crimmins | 35 | Son | Laborer | Massachusetts |
| 69 | Annie Downing | 75 | Head | — | Irish Free State |
| 70 | Michael Halley | 57 | Brother | — | Irish Free State |
| 71 | George A. Lefevre | 37 | Head | Truck Driver | New Hampshire |
| 72 | Dorothy Lefevre | 22 | Wife | — | Massachusetts |
| 73 | Donald Lefevre | 2 | Son | — | Massachusetts |
| 74 | Henry Smith | 25 | Head | Laborer | Massachusetts |
| 75 | Alex Glassman | 52 | Head | Grocer | Russia |
| 76 | Lena Glassman | 46 | Wife | — | Russia |
| 77 | Hyman Glassman | 19 | Son | Roofer | Russia |
| 78 | Jackie Glassman | 11 | Son | — | Massachusetts |
| 79 | Michael J. Morrissey | 53 | Head | Gardner | Massachusetts |
| 80 | Mary G. Morrissey | 51 | Wife | — | Massachusetts |
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)