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Mary Moon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Moon across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1886), then head of a 5-person household.
Age 54
b. ~1886
Female
Daughter
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Moon |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1886 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Michelle Moon | Other | — | 23 | ~1917 |
| Mary Moon | Daughter | — | 54 | ~1886 |
| Charles Parziale | Son | — | 44 | ~1896 |
| Florence Parziale | Daughter | — | 42 | ~1898 |
| Mary Parziale | Spouse | — | 78 | ~1862 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 44
Suffolk, Massachusetts · implied b. ~1886 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MOON |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 25 |
| Father's Birthplace | Italy |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 54
Suffolk-County, Massachusetts · implied b. ~1886 — 5 household members
| Surname | Moon |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Moon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Moon
Daughter · 1940 · age 54 · b. ~1886 · Massachusetts
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Sibling
Charles Parziale
Sibling · 1940 · age 44
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Parziale
Sibling · 1940 · age 42
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-t0627-01642-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary A. Parziale | 78 | Wife | — | Massachusetts |
| 42 | Charles Parziale | 44 | Son | Supervisor | Massachusetts |
| 43 | Florence G. Parziale | 42 | Daughter | Stenographer | Massachusetts |
| 44 | Mary L. Moon THIS PERSON | 54 | Daughter | — | Massachusetts |
| 45 | Michelle Moon | 23 | Granddaughter | Nurse | Massachusetts |
| 46 | Lillian Reichert | 65 | Head | Nurse | New York |
| 47 | Celia M. Clements | 40 | Housekeeper | Housekeeper | Nova Scotia |
| 48 | Eldon R. Dunphy | 49 | Head | Weaving | English Canada |
| 49 | Mary C. Dunphy | 50 | Wife | Weaver | Massachusetts |
| 50 | Mary Harrigan | 40 | Head | Nurse | Massachusetts |
| 51 | Madeline Macdaniel | 36 | Partner | Nurse | Maine |
| 52 | Muriel Penney | 26 | Roomer | Shoe Worker | Massachusetts |
| 53 | George C. West | 47 | Head | Yard Brakeman | Massachusetts |
| 54 | Annie M. West | 49 | Wife | — | Massachusetts |
| 55 | Lucretia E. Chipman | 67 | Aunt | Cook Keeper | Nova Scotia |
| 56 | John F. Walsh | 51 | Head | Electrician'S Helper | Massachusetts |
| 57 | Isabel Walsh | 43 | Sister | Waitress | Massachusetts |
| 58 | Margaret Walsh | 80 | Mother | — | Eire |
| 59 | Thomas Hanlon | 39 | Head | Dispatcher | Massachusetts |
| 60 | Elizabeth Hanlon | 31 | Wife | — | New York |
| 61 | Mary A. Peterson | 52 | Head | — | Massachusetts |
| 62 | Frederick W. Peterson | 24 | Son | — | Massachusetts |
| 63 | Joseph Peterson | 22 | Son | Labor | Massachusetts |
| 64 | Francis Peterson | 20 | Son | At-Mangler | Massachusetts |
| 65 | Rose A. Mckenna | 54 | Sister | Hair Dresser | Massachusetts |
| 66 | John J. Mckenna | 65 | Brother | Laborer | Massachusetts |
| 67 | Fannie Aronson | 67 | Head | — | Russia |
| 68 | Lillian Aronson | 45 | Daughter | Secretary | Massachusetts |
| 69 | Murray Aronson | 35 | Son | — | Massachusetts |
| 70 | Herbert Conitz | 45 | Son-in-law | Salesman | Massachusetts |
| 71 | Sadie Conitz | 44 | Daughter | — | Massachusetts |
| 72 | Marilyn Conitz | 16 | Granddaughter | — | Massachusetts |
| 73 | William A. O'Brien | 46 | Head | Surveyor | Massachusetts |
| 74 | Eva G. O'Brien | 47 | Wife | — | Massachusetts |
| 75 | Virginia O'Brien | 16 | Daughter | — | Massachusetts |
| 76 | Phyllis O'Brien | 15 | Daughter | — | Massachusetts |
| 77 | John J. Buckley | 54 | Brother-in-law | Engineer | Massachusetts |
| 78 | Emmaline O'Brien | 73 | Mother | — | Massachusetts |
| 79 | Grace Cotter | 41 | Head | — | Massachusetts |
| 80 | Joseph Cotter | 13 | Son | — | Massachusetts |
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)