JH
John Hayes — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Hayes across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Timothy & John — first a head (b.~1906), then head of a 8-person household.
Age 34
b. ~1906
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Hayes |
| Given Name | John J. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Draftsman |
| Industry | Designing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1293 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Draftsman |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Johanna Hayes | Daughter | — | 8 | ~1932 |
| Maura Hayes | Daughter | — | 2 | ~1938 |
| Paula Hayes | Daughter | — | 6 | ~1934 |
| John Hayes | Head | — | 34 | ~1906 |
| John Hayes | Other | — | 71 | ~1869 |
| Mary Hayes | Other | — | 65 | ~1875 |
| John Hayes | Son | — | 9 | ~1931 |
| Gladys Hayes | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 24
Suffolk, Massachusetts · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hayes |
| Given Name | John J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 34
Suffolk-County, Massachusetts · implied b. ~1906 — 8 household members
| Surname | Hayes |
| Given Name | John J. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Draftsman |
| Industry | Designing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1293 |
| Highest Grade | Hs 2 |
| 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 John Hayes across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Timothy Hayes (~0.92 confidence) and father John Hayes (~0.92 confidence) and mother Mary Hayes (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Timothy Hayes
b. ~1874
Source father
● Household
· direct · ~0.92
Father
John Hayes
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mary Hayes
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Hayes
Head · 1940 · age 34 · b. ~1906 · Massachusetts
★ You are viewing this record
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-t0627-01682-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Curtis | 25 | daughter | Salesgirl | Massachusetts |
| 42 | Helen Curtis | 22 | daughter | Clerk Statistical | Massachusetts |
| 43 | Patrick Keaney | 31 | head | Chauffeur | Eire |
| 44 | Sarah D. Keaney | 27 | wife | — | Eire |
| 45 | Catherine Keaney | 2 | daughter | — | Massachusetts |
| 46 | John Keaney | 1 | son | — | Massachusetts |
| 47 | John D. Flynn | 61 | head | — | Massachusetts |
| 48 | Winifred B. Flynn | 58 | wife | — | Massachusetts |
| 49 | Roland Flynn | 25 | son | Printer | Massachusetts |
| 50 | Dorothy Flynn | 23 | daughter | Bill Checker | Massachusetts |
| 51 | John Flynn | 22 | son | — | Massachusetts |
| 52 | Ruth Flynn | 13 | daughter | — | Massachusetts |
| 53 | William Johnson | 7 | step-son | — | Massachusetts |
| 54 | Cornelius Buckley | 52 | head | Fireman | Rhode Island |
| 55 | Helen Buckley | 49 | wife | — | Vermont |
| 56 | Charles J. Buckley | 21 | son | — | Massachusetts |
| 57 | William L. Buckley | 19 | son | Photographer | Connecticut |
| 58 | Vincent P. Buckley | 17 | son | — | Connecticut |
| 59 | Cornelius J. Buckley | 15 | son | — | Connecticut |
| 60 | Charles E. Reardon | 44 | brother-in-law | Accountant | Vermont |
| 61 | John J. Hayes THIS PERSON | 34 | head | Draftsman | Massachusetts |
| 62 | Gladys A. Hayes | 37 | wife | — | Massachusetts |
| 63 | John Hayes | 9 | son | — | Massachusetts |
| 64 | Johanna Hayes | 8 | daughter | — | Massachusetts |
| 65 | Paula Hayes | 6 | daughter | — | Massachusetts |
| 66 | Maura Hayes | 2 | daughter | — | Massachusetts |
| 67 | John J. Sr. Hayes | 71 | father | Supervisory Clerk | Massachusetts |
| 68 | Mary Hayes | 65 | mother | — | Massachusetts |
| 69 | Frank | 31 | uncle | Cook | Massachusetts |
| 70 | — | None | — | — | — |
| 71 | Reginald Clayton | 41 | head | Manager | England |
| 72 | Minnie A. Clayton | 41 | wife | — | Australia |
| 73 | Marjorie Clayton | 18 | daughter | — | England |
| 74 | Norma Clayton | 15 | daughter | — | Massachusetts |
| 75 | John O'Hearn | 40 | head | Assembler | Ireland |
| 76 | Nora A. O'Hearn | 40 | wife | — | Ireland |
| 77 | Mary O'Hearn | 8 | daughter | — | Massachusetts |
| 78 | John O'Hearn | 5 | son | — | Massachusetts |
| 79 | Thomas O'Hearn | 4 | son | — | Massachusetts |
| 80 | — | None | — | — | — |
Pedigree Summary
John
Gen 1 · 3 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)