JG
John Gardner — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Gardner across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 6-person household.
Age 45
b. ~1895
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Office Manager |
| Industry | Steel Plate Mfg. |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 3000 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Office Manager |
| Township / Ward | Arlington |
| Est. Birth Year | ~1895 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Louise Gardner | Daughter | — | 19 | ~1921 |
| John Gardner | Head | — | 45 | ~1895 |
| William Gardner | Other | — | 41 | ~1899 |
| Louise Christensen | Other | — | 79 | ~1861 |
| John Gardner | Son | — | 15 | ~1925 |
| Sophie Gardner | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 25
Middlesex, Massachusetts · implied b. ~1895 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1896 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Stock Clerk |
| Industry | Broker Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Year of Naturalization | 1915 |
| Birthplace (normalized) | scotland |
1930
Middlesex, Massachusetts
Head, age 35
Middlesex, Massachusetts · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1897 |
| Age at First Marriage | 22 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Office Manager |
| Industry | Stock Brokers |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, Massachusetts
Head, age 45
Middlesex-County, Massachusetts · implied b. ~1895 — 6 household members
| Surname | Gardner |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Office Manager |
| Industry | Steel Plate Mfg. |
| Class of Worker | PW |
| Hours Worked | 38 |
| Income (1939) | 3000 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Gardner across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Gardner
Head · 1940 · age 45 · b. ~1895 · 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 — 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-t0627-01602-00021)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen C. Pryzynski | 17 | Lodger | — | Massachusetts |
| 2 | Joseph Pryzynski | 16 | Lodger | — | Massachusetts |
| 3 | Edward Pryzynski | 12 | Lodger | — | Massachusetts |
| 4 | Nelson D. Dean | 32 | Head | Laundry Driver & Salesman | Maine |
| 5 | Susie H. Dean | 54 | Wife | — | Maine |
| 6 | Andrew J. Johnson | 63 | Head | Treasurer | Sweden |
| 7 | Maria E. Johnson | 59 | Wife | — | Massachusetts |
| 8 | Francis H. Wylie | 45 | Head | Credit Manager | Maine |
| 9 | Ella L. Wylie | 47 | Wife | — | Maine |
| 10 | Mary E. Wylie | 17 | Daughter | — | Washington |
| 11 | Walter J. Thayer | 58 | Head | Manager | Massachusetts |
| 12 | Maude E. Thayer | 56 | Wife | — | Massachusetts |
| 13 | William L. Thayer | 85 | Father | — | Vermont |
| 14 | Maurice P. Royal | 42 | Head | Waiter | Eire |
| 15 | Mildred H. Royal | 34 | Wife | Switchboard Operator | Canada-English |
| 16 | Elizabeth G. Hogan | 70 | Lodger | — | Massachusetts |
| 17 | Eugene Cole | 49 | Head | Attendant | Massachusetts |
| 18 | Mary Q. Cole | 43 | Wife | Hair Dresser | Azores |
| 19 | Israel T. Hughes | 53 | Head | Commercial Traveler | Maine |
| 20 | Frances D. Hughes | 54 | Wife | — | Maine |
| 21 | Dudley H. Hughes | 24 | Son | Clerical Worker | New York |
| 22 | John Gardner THIS PERSON | 45 | Head | Office Manager | Scotland |
| 23 | Sophie W. Gardner | 43 | Wife | — | Massachusetts |
| 24 | Louise E. Gardner | 19 | Daughter | — | Massachusetts |
| 25 | John L. Gardner | 15 | Son | — | Massachusetts |
| 26 | Louise E. Christensen | 79 | Mother-in-law | — | Massachusetts |
| 27 | William Gardner | 41 | Brother | — | Massachusetts |
| 28 | Maurice D. Sullivan | 52 | Head | Brick Layer | Massachusetts |
| 29 | Mary C. Sullivan | 46 | Wife | — | Massachusetts |
| 30 | Patricia A. Sullivan | 22 | Daughter | Stenographer | Massachusetts |
| 31 | Kathleen L. Sullivan | 20 | Daughter | Stenographer | Massachusetts |
| 32 | Terence M. Sullivan | 17 | Son | — | Massachusetts |
| 33 | Marie C. Sullivan | 15 | Daughter | — | Massachusetts |
| 34 | Constance Sullivan | 14 | Daughter | — | Massachusetts |
| 35 | Paul Sullivan | 12 | Son | — | Massachusetts |
| 36 | Katharine M. Sheehan | 55 | Sister | Seamstress | Massachusetts |
| 37 | Riley W. Hogan | 33 | Head | Accountant | Massachusetts |
| 38 | Eleanor V. Hogan | 33 | Wife | — | Massachusetts |
| 39 | Mary L. Hogan | 5 | Daughter | — | Massachusetts |
| 40 | Eleanor R. Hogan | 1 | Daughter | — | 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)