HJ
Helen Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Helen Jackson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Rose — first a daughter (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Female
Daughter
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Jackson |
| Given Name | Helen R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | waitress |
| Industry | restaurant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 750 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Waitress |
| Township / Ward | Somerville 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Marion Ward | Daughter | — | 27 | ~1913 |
| Helen Jackson | Daughter | — | 26 | ~1914 |
| Rose Ward | Head | — | 57 | ~1883 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 6
Middlesex, Massachusetts · implied b. ~1914
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Jackson |
| Given Name | Helen B. |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Other, age 17
Middlesex, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Helen |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | Massachusetts |
| Occupation | Student |
| Industry | High school |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 26
Middlesex-County, Massachusetts · implied b. ~1914 — 3 household members
| Surname | Jackson |
| Given Name | Helen R. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | waitress |
| Industry | restaurant |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 750 |
| Highest Grade | H-4 |
| 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 Helen Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rose Ward (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rose Ward
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Jackson
Daughter · 1940 · age 26 · b. ~1914 · Massachusetts
★ You are viewing this record
Sibling
Marion Ward
Sibling · 1940 · age 27
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01704-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Christine O'Leary | 27 | Wife | — | Massachusetts |
| 42 | Frederick O'Leary | 7 | Son | — | Massachusetts |
| 43 | Joan O'Leary | 3 | Daughter | — | Massachusetts |
| 44 | Alice O'Leary | 1 | Daughter | — | Massachusetts |
| 45 | Clara Hourihan | 44 | Head | — | Maine |
| 46 | Constance Hourihan | 15 | Daughter | — | Massachusetts |
| 47 | Mary Hallion | 70 | Head | — | Eire |
| 48 | Margaret Hallion | 42 | Daughter | — | Massachusetts |
| 49 | Edward F. Hallion | 39 | Son | Policeman | Massachusetts |
| 50 | Clarence Hallion | 37 | Son | Clerk | Massachusetts |
| 51 | Alice K. Hallion | 34 | Daughter | — | Massachusetts |
| 52 | Rose Mary Ward | 57 | Head | — | Lithuania |
| 53 | Marion Ward | 27 | Daughter | Stenographer | Massachusetts |
| 54 | Helen R. Jackson THIS PERSON | 26 | Daughter | Waitress | Massachusetts |
| 55 | Arthur Vessil | 29 | Head | Of Sewage Project | Massachusetts |
| 56 | Irene Vessil | 26 | Wife | — | Massachusetts |
| 57 | Ruth Vessil | 6 | Daughter | — | Massachusetts |
| 58 | Arthur Jr. Vessil | 5 | Son | — | Massachusetts |
| 59 | Joan Vessil | 2 | Daughter | — | Massachusetts |
| 60 | William Cole | 15 | Nephew | — | Massachusetts |
| 61 | Anthony Tavilla | 42 | Head | Sewage Project | Italy |
| 62 | Antonia Tavilla | 41 | Wife | — | Italy |
| 63 | Mary Tavilla | 13 | Daughter | — | Massachusetts |
| 64 | Dominic Tavilla | 11 | Son | — | Massachusetts |
| 65 | Salvatore Tavilla | 5 | Son | — | Massachusetts |
| 66 | Max Iovanni | 43 | Head | Shoemaker | Italy |
| 67 | Louise Iovanni | 39 | Wife | Feeder | Massachusetts |
| 68 | Anna Iovanni | 20 | Daughter | — | Massachusetts |
| 69 | John Iovanni | 17 | Son | — | Massachusetts |
| 70 | Felix Iovanni | 10 | Son | — | Massachusetts |
| 71 | Francis Knight | 26 | Head | Lamp Clipper | Maine |
| 72 | Muriel Knight | 24 | Wife | — | England |
| 73 | Mary Gazola | 50 | Head | — | Italy |
| 74 | John Gazola | 23 | Son | Washing | Massachusetts |
| 75 | Claude Gazola | 18 | Daughter | — | Massachusetts |
| 76 | John Ferrara | 40 | Lodger | Painter | Italy |
| 77 | Rose Ferrara | 40 | Lodger | — | Massachusetts |
| 78 | Agnes Rogers | 49 | Head | — | Massachusetts |
| 79 | Albert Rogers | 22 | Son | — | Massachusetts |
| 80 | James Rogers | 10 | Son | — | Massachusetts |
Pedigree Summary
Helen + 1 sibling
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
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)