JG
John Gleason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Gleason across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents George & John — first a son (b.~1914), then head of a 3-person household.
Age 26
b. ~1914
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Gleason |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Clerk |
| Industry | Electric Light |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Lowell |
| Est. Birth Year | ~1914 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Gleason | Son | — | 26 | ~1914 |
| Gertrude Gleason | Head | — | 64 | ~1876 |
| Fred Gleason | Son | — | 25 | ~1915 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 6
Middlesex, Massachusetts · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gleason |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gleason |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Chain Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 26
Middlesex-County, Massachusetts · implied b. ~1914 — 3 household members
| Surname | Gleason |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Occupation | Clerk |
| Industry | Electric Light |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 266 |
| Highest Grade | Hs 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 Gleason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Gleason (~0.92 confidence) and father John Gleason (~0.92 confidence) and mother Gertrude Gleason (~0.92 confidence) and mother Gertrude Gleason (~0.92 confidence) and mother Marie Gleason (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Gleason
b. ~1886
Source father
● Household
· direct · ~0.92
Father
John Gleason
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Gertrude Gleason
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Gertrude Gleason
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Marie Gleason
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gleason
Son · 1940 · age 26 · b. ~1914 · Massachusetts
★ You are viewing this record
Sibling
Fred Gleason
Sibling · 1940 · age 25
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
39 people indexed on this census page (nara:1940:m-t0627-01692-00128)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph J. Dodge | 35 | Head | Boxmaker | New Hampshire |
| 42 | Helen D.W. Dodge | 29 | Wife | — | Maine |
| 43 | Mary Lou Dodge | 5 | Daughter | — | Massachusetts |
| 44 | Joseph Dodge | 3 | Son | — | Massachusetts |
| 45 | Marion Dodge | 1 | Daughter | — | Massachusetts |
| 46 | Martha Mitter | 53 | Head | — | New Hampshire |
| 47 | Frederick Mitter | 60 | Son | Machinist | Massachusetts |
| 48 | Mary A. Mitter | 59 | Daughter | — | Massachusetts |
| 49 | William E. Mitter | 35 | Grandson | Newspaperman | Massachusetts |
| 50 | Harry A. Mitter | 43 | Nephew | Laborer | Massachusetts |
| 51 | Thomas J. Evans | 58 | Head | Junk Dealer | Massachusetts |
| 52 | Isabelle S. Evans | 58 | Wife | — | New Hampshire |
| 53 | Donald Evans | 21 | Son | Mechanic | Massachusetts |
| 54 | Harold Evans | 17 | Son | Electrician | Massachusetts |
| 55 | Joseph Sousa | 26 | Head | Watchman | Massachusetts |
| 56 | Doris R. Sousa | 24 | Wife | — | Massachusetts |
| 57 | Lenore Sousa | 7 | Daughter | — | Massachusetts |
| 58 | Richard Sousa | 5 | Son | — | Massachusetts |
| 59 | Mary Sousa | 4 | Daughter | — | Massachusetts |
| 60 | Robert Sousa | 3 | Son | — | Massachusetts |
| 61 | Brendon Sousa | 1 | Son | — | Massachusetts |
| 62 | Arthur Ireland | 45 | Head | Clerk | Massachusetts |
| 63 | Catherine Ireland | 40 | Wife | — | Massachusetts |
| 64 | George J. Ireland | 21 | Son | Clerk | Massachusetts |
| 65 | Elizabeth Ireland | 16 | Daughter | — | Massachusetts |
| 66 | Isabelle Kirby | 76 | Mother | — | Scotland |
| 67 | Elizabeth Dealska | 63 | Mother in L | — | Irish Free State |
| 68 | Harry F. Douglass | 43 | Head | — | Massachusetts |
| 69 | Helen E. Douglass | 35 | Wife | — | Massachusetts |
| 70 | Henry E. Douglass | 7 | Son | — | Massachusetts |
| 71 | George H. Douglass | 47 | Brother | Amusement Operator | Massachusetts |
| 72 | Daniel Harkins | 44 | Head | Machinist | New Hampshire |
| 73 | Annabella Harkins | 40 | Wife | — | Massachusetts |
| 74 | Daniel Harkins | 21 | Son | Griller | Massachusetts |
| 75 | Margaret Harkins | 20 | Daughter | Packer | Massachusetts |
| 76 | Mary Margaret Harkins | 67 | Aunt | — | Massachusetts |
| 77 | Gertrude Gleason | 64 | Head | — | Massachusetts |
| 78 | John F. Gleason THIS PERSON | 26 | Son | Clerk | Massachusetts |
| 79 | Fred J. Gleason | 25 | Son | Clerk | Massachusetts |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)