JT
John Tracy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Tracy across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Tracy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Brush Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Truck Driver |
| Township / Ward | Boston |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Bernard Tracy | Son | — | 20 | ~1920 |
| John Tracy | Son | — | 22 | ~1918 |
| George Tracy | Son | — | 11 | ~1929 |
| Thomas Tracy | Son | — | 19 | ~1921 |
| Annie Tracy | Spouse | — | 50 | ~1890 |
| Madeline Tracy | Daughter | — | 7 | ~1933 |
| John Tracy | Head | — | 62 | ~1878 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracey |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 7 household members
| Surname | Tracy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Truck Driver |
| Industry | Brush Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 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 John Tracy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Tracy
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
George Tracy
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Tracy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Tracy
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Tracy
Sibling · 1940 · age 19
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 — 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-t0627-01669-00228)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruth Herron | 15 | Daughter | — | Massachusetts |
| 42 | Muriel Herron | 8 | Daughter | — | Massachusetts |
| 43 | Priscilla Herron | 5 | Daughter | — | Massachusetts |
| 44 | Donald Herron | 3 | Son | — | Massachusetts |
| 45 | Lawrence Sweeney | 33 | Head | Manager | Massachusetts |
| 46 | Gertrude Sweeney | 33 | Wife | Hostess | Massachusetts |
| 47 | Gerald Sweeney | 5 | Daughter | — | Massachusetts |
| 48 | John Sweeney | 4 | Son | — | Massachusetts |
| 49 | Helene Grover | 23 | Cousin | — | Massachusetts |
| 50 | William Gour | 29 | Head | Manager | New Jersey |
| 51 | Kathleen Gour | 29 | Wife | — | Pennsylvania |
| 52 | Barbara Gour | 5 | Daughter | — | Pennsylvania |
| 53 | Ora Gray | 46 | Roomer | Waitress | Maine |
| 54 | Edwin Gray | 5 | Roomer | — | Massachusetts |
| 55 | John Tracy | 62 | Head | Janitor | Eire |
| 56 | Annie Tracy | 50 | Wife | — | Eire |
| 57 | John Tracy THIS PERSON | 22 | Son | Truck Driver | Massachusetts |
| 58 | Bernard Tracy | 20 | Son | Salesman | Massachusetts |
| 59 | Thomas Tracy | 19 | Son | Clerk (Sales) | Massachusetts |
| 60 | Madeline Tracy | 7 | Daughter | — | Massachusetts |
| 61 | George Tracy | 11 | Son | — | Massachusetts |
| 62 | Theresa Dacey | 55 | Head | Teacher | Massachusetts |
| 63 | Catharine Mcann | 60 | Roomer | Teacher | Massachusetts |
| 64 | Gabriel Mooccia | 50 | Head | Laborer | Italy |
| 65 | Camelle Mooccia | 50 | Wife | — | Massachusetts |
| 66 | Florence Mooccia | 25 | Daughter | — | Massachusetts |
| 67 | Marie Mooccia | 22 | Daughter | House Work | Massachusetts |
| 68 | George Mooccia | 14 | Son | Laborer | Massachusetts |
| 69 | Emma Mooccia | 18 | Daughter | House Work | Massachusetts |
| 70 | Dorothea Mooccia | 15 | Daughter | — | Massachusetts |
| 71 | Rita Mooccia | 11 | Daughter | — | Massachusetts |
| 72 | Ronald Mooccia | 2 | Grand-son | — | Massachusetts |
| 73 | Frank Varnarin | 32 | Head | Manager | Massachusetts |
| 74 | Helen Varnarin | 27 | Wife | — | Massachusetts |
| 75 | Donald Varnarin | 8 | Son | — | New Hampshire |
| 76 | Constantine Haldoupis | 50 | Head | Sales Clerk | Greece |
| 77 | Mary Haldoupis | 46 | Wife | — | Greece |
| 78 | Alexander Haldoupis | 23 | Son | Collector | Massachusetts |
| 79 | Peter Haldoupis | 21 | Son | Sales Clerk | Massachusetts |
| 80 | Emmanuel Markomanolakis | 40 | Son-in-law | Chef | Greece |
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)