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Mary Merrill — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Merrill across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 6-person household.
Age 14
b. ~1926
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Merrill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Haverhill City |
| Est. Birth Year | ~1926 |
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 |
|---|---|---|---|---|
| Robert Merrill | Son | — | 10 | ~1930 |
| Mary Merrill | Daughter | — | 14 | ~1926 |
| Harold Merrill | Head | — | 47 | ~1893 |
| Dorothy Merrill | Spouse | — | 39 | ~1901 |
| Earl Merrill | Son | — | 17 | ~1923 |
| Harry Merrill | Son | — | 9 | ~1931 |
Census Appearances
1930
Essex, Massachusetts
Daughter, age 4
Essex, Massachusetts · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Merrill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Daughter, age 14
Essex-County, Massachusetts · implied b. ~1926 — 6 household members
| Surname | Merrill |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill City |
| 1935 Residence (County) | Essex |
| 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 Merrill across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Merrill
Daughter · 1940 · age 14 · b. ~1926 · Massachusetts
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Sibling
Earl Merrill
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Merrill
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Merrill
Sibling · 1940 · age 9
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 — 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-t0627-01580-00602)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Sayers | 19 | Daughter | Carpenter | Massachusetts |
| 42 | Albert Sayers | 17 | Son | Stock Man | Massachusetts |
| 43 | Armand Sayers | 14 | Son | — | Massachusetts |
| 44 | Raymond Sayers | 13 | Son | — | Massachusetts |
| 45 | Philip Dupuis | 39 | Head | Laborer | Massachusetts |
| 46 | Yvonne Dupuis | 37 | Wife | Presser | Massachusetts |
| 47 | Lorraine Dupuis | 5 | Daughter | — | Massachusetts |
| 48 | Bernard Dupuis | 2 | Son | — | Massachusetts |
| 49 | Moise Derocher | 81 | Lodger | — | Canada French |
| 50 | Lionel Volcoor | 42 | Head | Leather Worker | New Hampshire |
| 51 | Blanche Volcoor | 44 | Wife | Housewife | Massachusetts |
| 52 | Alice Volcoor | 15 | Daughter | New Worker | New Hampshire |
| 53 | Julius Belsky | 63 | Head | Edge Trimmer | Lithuania |
| 54 | Jeannah Belsky | 53 | Wife | Heel Scourer | Lithuania |
| 55 | Helen Belsky | 31 | Daughter | Bench Girl | Massachusetts |
| 56 | Joseph Belsky | 29 | Son | Chemist | Massachusetts |
| 57 | Walter Simons | 45 | Head | Tavern Proprietor | Lithuania |
| 58 | Patricia Simons | 45 | Wife | — | Lithuania |
| 59 | June Simons | 11 | Daughter | — | Massachusetts |
| 60 | Diana Simons | 6 | Daughter | — | Massachusetts |
| 61 | Peter Cudinsky | 56 | Head | Edge Trimmer | Lithuania |
| 62 | Tepla Cudinsky | 50 | Wife | — | Lithuania |
| 63 | Helen Cudinsky | 21 | Daughter | Hair Dresser | Massachusetts |
| 64 | Olga Cudinsky | 16 | Daughter | — | Massachusetts |
| 65 | Joseph Masys | 44 | Head | Cafe Proprietor | Lithuania |
| 66 | Mikalene Masys | 45 | Wife | Cook | Lithuania |
| 67 | Boles Masys | 20 | Son | — | Massachusetts |
| 68 | Lillian Masys | 14 | Daughter | — | Massachusetts |
| 69 | Joseph Shelansky | 57 | Head | Proprietor | Poland |
| 70 | Mary Shelansky | 52 | Wife | — | Poland |
| 71 | Peter Shelansky | 26 | Son | Engineer | Massachusetts |
| 72 | Louise Shelansky | 20 | Daughter | Office Secretary | Massachusetts |
| 73 | Virginia Shelansky | 17 | Daughter | — | Massachusetts |
| 74 | Harold Merrill | 47 | Head | Laborer | Massachusetts |
| 75 | Dorothy Merrill | 39 | Wife | Cloth Folder | New Hampshire |
| 76 | Earl Merrill | 17 | Son | Grocery Clerk | Massachusetts |
| 77 | Mary Merrill THIS PERSON | 14 | Daughter | — | Massachusetts |
| 78 | Robert Merrill | 10 | Son | — | Massachusetts |
| 79 | Harry Merrill | 9 | Son | — | Massachusetts |
| 80 | Peter Golossi | 52 | Head | Street Laborer | Italy |
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)