HC
Hazel Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Hazel Cook across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1906), then head of a 10-person household.
Age 34
b. ~1906
Female
Spouse
Born: Canada-English
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Cook |
| Given Name | Hazel Q. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Canada-English |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birthplace (normalized) | canada-english |
| Township / Ward | Boston |
| Est. Birth Year | ~1906 |
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 Hazel | Age | Birth yr |
|---|---|---|---|---|
| Gerald Cook | Son | — | 13 | ~1927 |
| Barbara Cook | Daughter | — | 3 | ~1937 |
| Ralph Cook | Son | — | 12 | ~1928 |
| Thelma Cook | Daughter | — | 1 | ~1939 |
| Robert Cook | Son | — | 10 | ~1930 |
| Louis Cook | Daughter | — | ~1940 | |
| Donald Cook | Son | — | 7 | ~1933 |
| Leo Cook | Son | — | 15 | ~1925 |
| Arthur Cook | Head | — | 44 | ~1896 |
| Hazel Cook | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 23
Suffolk, Massachusetts · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Hazel B |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Canada-English |
| Naturalization Status | Alien |
| Year of Immigration | 1922 |
| Age at First Marriage | 18 |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Canada-English |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birthplace (normalized) | canada-english |
1940
Suffolk-County, Massachusetts
Spouse, age 34
Suffolk-County, Massachusetts · implied b. ~1906 — 10 household members
| Surname | Cook |
| Given Name | Hazel Q. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Canada-English |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Alien |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birthplace (normalized) | canada-english |
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 Hazel Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Hazel Cook
Spouse · 1940 · age 34 · b. ~1906 · 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 — 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-t0627-01671-00373)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen E. Fagan | 33 | Wife | — | Massachusetts |
| 42 | Joan P. Fagan | 9 | Daughter | — | Massachusetts |
| 43 | Jacqueline Fagan | 7 | Daughter | — | Massachusetts |
| 44 | William Fagan | 1 | Son | — | Massachusetts |
| 45 | John Sullivan | 34 | Head | Porter | Eire |
| 46 | Catherine Sullivan | 33 | Wife | — | Eire |
| 47 | Joan Sullivan | 2 | Daughter | — | Massachusetts |
| 48 | Catherine Sullivan | 0 | Daughter | — | Massachusetts |
| 49 | Ellen Ryan | 47 | Head | — | Eire |
| 50 | James Murphy | 66 | Head | — | Eire |
| 51 | Catherine Murphy | 60 | Wife | — | Eire |
| 52 | Mary Murphy | 25 | Daughter | Saleslady | Massachusetts |
| 53 | Arthur Cook | 44 | Head | Painter | Canada-English |
| 54 | Hazel Q. Cook THIS PERSON | 34 | Wife | — | Canada-English |
| 55 | Leo Cook | 15 | Son | — | Massachusetts |
| 56 | Gerald Cook | 13 | Son | — | Massachusetts |
| 57 | Ralph Cook | 12 | Son | — | Massachusetts |
| 58 | Robert Cook | 10 | Son | — | Massachusetts |
| 59 | Donald Cook | 7 | Son | — | Massachusetts |
| 60 | Barbara Cook | 3 | Daughter | — | Massachusetts |
| 61 | Thelma Cook | 1 | Daughter | — | Massachusetts |
| 62 | Louis Cook | 0 | Daughter | — | Massachusetts |
| 63 | Willoughby Holman | 36 | Head | Milk Salesman | Canada-English |
| 64 | Catherine Holman | 37 | Wife | — | Canada-English |
| 65 | Arthur J. Holman | 10 | Son | — | Massachusetts |
| 66 | Walter Holman | 9 | Son | — | Massachusetts |
| 67 | Ruth Holman | 1 | Daughter | — | Massachusetts |
| 68 | Mary Holman | 0 | Daughter | — | Massachusetts |
| 69 | William Sullivan | 36 | Head | — | Eire |
| 70 | Norah Sullivan | 36 | Wife | — | Eire |
| 71 | Mary Sullivan | 13 | Daughter | — | Massachusetts |
| 72 | William Sullivan | 11 | Son | — | Massachusetts |
| 73 | John Sullivan | 9 | Son | — | Massachusetts |
| 74 | Patrick Sullivan | 5 | Son | — | Massachusetts |
| 75 | Joseph Sullivan | 5 | Son | — | Massachusetts |
| 76 | Donald Sullivan | 4 | Son | — | Massachusetts |
| 77 | Emily Cline | 54 | Head | School Teacher | Massachusetts |
| 78 | Libby Cline | 51 | Sister | — | Massachusetts |
| 79 | Ann Kirwan | 68 | Head | — | Eire |
| 80 | Mary Kirwan | 26 | Daughter | Operator | Eire |
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)