JP
John Preston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Preston across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Preston |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Newspapers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 935 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Arlington |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Mary Preston | Spouse | — | 48 | ~1892 |
| Myles Preston | Son | — | 21 | ~1919 |
| Paul Preston | Son | — | 25 | ~1915 |
| John Preston | Son | — | 23 | ~1917 |
| Mary Preston | Daughter | — | 18 | ~1922 |
| John Preston | Head | — | 54 | ~1886 |
| Elizabeth Preston | Daughter | — | 28 | ~1912 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Preston |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | Canada English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 7 household members
| Surname | Preston |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Occupation | Stenographer |
| Industry | Newspapers |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 935 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| 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 Preston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Preston
Son · 1940 · age 23 · b. ~1917 · Massachusetts
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Sibling
Elizabeth Preston
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Preston
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Preston
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myles Preston
Sibling · 1940 · age 21
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-t0627-01601-00355)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Blanche Pelletier | 50 | daughter | Housework | Massachusetts |
| 2 | Helen Degaze | 26 | lodger | Saleswoman | New Jersey |
| 3 | Barbara Kerr | 66 | lodger | — | Germany |
| 4 | Marie Dousault | 66 | lodger | Housework | Vermont |
| 5 | Edward J. Connor | 43 | head | Superintendent | Massachusetts |
| 6 | Bertha Connor | 47 | wife | — | Massachusetts |
| 7 | Anne Connor | 11 | daughter | — | Massachusetts |
| 8 | Theresa Connor | 7 | daughter | — | Massachusetts |
| 9 | William Sullivan | 44 | head | Carpenter | Massachusetts |
| 10 | Florence Sullivan | 37 | wife | — | Massachusetts |
| 11 | Edward J. Kelly | 47 | head | Dormant Supervisor | Massachusetts |
| 12 | Flora Kelly | 47 | wife | — | Massachusetts |
| 13 | William Kelly | 14 | son | — | Massachusetts |
| 14 | Eileen Kelly | 11 | daughter | — | Massachusetts |
| 15 | Helen Kelly | 7 | daughter | — | Massachusetts |
| 16 | Cornelius Fitzgerald | 52 | head | Janitor | Irish Free State |
| 17 | Mary L. Fitzgerald | 47 | wife | — | Irish Free State |
| 18 | Herbert Fitzgerald | 19 | son | Delivery Boy | Massachusetts |
| 19 | Iris Fitzgerald | 14 | daughter | New Maker | Massachusetts |
| 20 | Ellen Glynn | 74 | head | — | Irish Free State |
| 21 | John G. Glynn | 53 | son | Foreman | Maine |
| 22 | George H. Reynolds | 40 | head | Mason Helper | Massachusetts |
| 23 | Frances Reynolds | 39 | wife | — | Massachusetts |
| 24 | George F. Reynolds | 9 | son | — | Massachusetts |
| 25 | James E. Reynolds | 7 | son | — | Massachusetts |
| 26 | John J. Preston | 54 | head | Bus Operator | Massachusetts |
| 27 | Mary Preston | 48 | wife | — | Massachusetts |
| 28 | Elizabeth Preston | 28 | daughter | Stenographer | Massachusetts |
| 29 | Paul R. Preston | 25 | son | Freight Handler | Massachusetts |
| 30 | John J. Jr. Preston THIS PERSON | 23 | son | Stenographer | Massachusetts |
| 31 | Myles Preston | 21 | son | Delivery Boy | Massachusetts |
| 32 | Mary Louise Preston | 18 | daughter | — | Massachusetts |
| 33 | Patrick Conning | 60 | head | Laborer | Irish Free State |
| 34 | Margaret Conning | 59 | wife | — | Irish Free State |
| 35 | John Conning | 36 | son | Laborer | Massachusetts |
| 36 | Edward Conning | 32 | son | Meter Clerk | Massachusetts |
| 37 | Joseph Ford | 23 | head | Meter Reader | Massachusetts |
| 38 | Mary Ford | 21 | wife | — | Massachusetts |
| 39 | Marilyn Ford | 5 | daughter | — | Massachusetts |
| 40 | William Coughlin | 39 | head | Laborer | Massachusetts |
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)