MP
Mary Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Peterson across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 3-person household.
Age 60
b. ~1880
Female
Spouse
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Lawrence |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Weaver |
| Industry | Woolen Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Weaver |
| Township / Ward | Lawrence |
| Est. Birth Year | ~1880 |
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 |
|---|---|---|---|---|
| John Peterson | Head | — | 61 | ~1879 |
| James Peterson | Son | — | 31 | ~1909 |
| Mary Peterson | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Essex, Massachusetts
Spouse, age 40
Essex, Massachusetts · implied b. ~1880 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1909 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | weaver |
| Industry | woolen mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1917 |
| Birthplace (normalized) | scotland |
1930
Essex, Massachusetts
Other, age 49
Essex, Massachusetts · implied b. ~1881 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary R. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Alien |
| Year of Immigration | 1911 |
| Age at First Marriage | 34 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Essex-County, Massachusetts
Spouse, age 60
Essex-County, Massachusetts · implied b. ~1880 — 3 household members
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Lawrence |
| 1935 Residence (County) | Essex |
| Naturalization Status | Naturalized |
| Occupation | Weaver |
| Industry | Woolen Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Peterson 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 Peterson
Spouse · 1940 · age 60 · b. ~1880 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01582-00957)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marion Mooney | 43 | Wife | — | Massachusetts |
| 2 | Virginia Mooney | 13 | Daughter | — | Massachusetts |
| 3 | Frank Morgan | 71 | Head | — | Massachusetts |
| 4 | Margaret Morgan | 65 | Wife | — | Vermont |
| 5 | Dora King | 51 | Head | Seamstress | Rhode Island |
| 6 | Charles Mooney | 48 | Head | Finisher | New York |
| 7 | Alice Mooney | 49 | Wife | — | Massachusetts |
| 8 | Catherine O'Leary | 70 | Head | — | Massachusetts |
| 9 | Delia French | 72 | Head | — | England |
| 10 | Alfred Gillespie | 39 | Head | Janitor | Scotland |
| 11 | Delia Gillespie | 40 | Wife | Helper | Massachusetts |
| 12 | Bertram Fontaine | 41 | Head | Purchaser | Rhode Island |
| 13 | Alice Fontaine | 37 | Wife | — | Massachusetts |
| 14 | Beatrice Page | 18 | Daughter | — | Massachusetts |
| 15 | George Harding | 38 | Head | Piece Mender | Massachusetts |
| 16 | Ann Harding | 47 | Wife | — | Scotland |
| 17 | James Falvey | 61 | Head | Weaver | Rhode Island |
| 18 | Adah Woodard | 72 | Head | — | Maine |
| 19 | Anna Haas | 72 | Head | — | Germany |
| 20 | Margaret Costello | 69 | Head | — | Massachusetts |
| 21 | William Rich | 62 | Head | Tree Surgeon | Massachusetts |
| 22 | John C. Peterson | 61 | Head | Comber | New Jersey |
| 23 | Mary Peterson THIS PERSON | 60 | Wife | Weaver | Scotland |
| 24 | James Peterson | 31 | Son | Trucker | Massachusetts |
| 25 | Mary Ballard | 65 | Head | Sewer | New Hampshire |
| 26 | Catherine Dimple | 70 | Head | Sewer | Scotland |
| 27 | Virginia Mann | 67 | Head | Janitress | Scotland |
| 28 | Alfio Scandora | 57 | Head | Comber | Italy |
| 29 | Rose Scandora | 47 | Wife | — | Italy |
| 30 | Freda Scandora | 23 | Daughter | Bookkeeper | Massachusetts |
| 31 | David Latta | 42 | Head | Salesman | Massachusetts |
| 32 | Grace Latta | 25 | Wife | — | Italy |
| 33 | Arthur Bosco | 24 | Brother-in-law | Woolsorter | Italy |
| 34 | Richard Lawlor | 24 | Head | Manager | New Hampshire |
| 35 | James Lawlor | 35 | Son | Laborer | Great Britain |
| 36 | Gladys Murphy | 40 | Daughter | Maid | Massachusetts |
| 37 | John Desris | 37 | Boarder | Pleater | Massachusetts |
| 38 | John R. Greenwood | 69 | Roomer | — | England |
| 39 | Thos. Greer | 52 | Roomer | Laborer | Massachusetts |
| 40 | Patrick Higgins | 51 | Roomer | Laborer | 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)