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Leon Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Leon Brown across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 6-person household.
Age 56
b. ~1884
Male
Head
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Brown |
| Given Name | Leon F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Milk Delivery |
| Industry | Milk Suppliers |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2000 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Milk Delivery |
| Township / Ward | Medford City |
| Est. Birth Year | ~1884 |
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 Leon | Age | Birth yr |
|---|---|---|---|---|
| Frank Brown | Son | — | 34 | ~1906 |
| Graham Brown | Son | — | 18 | ~1922 |
| Leon Brown | Head | — | 56 | ~1884 |
| Winifred Brown | Spouse | — | 55 | ~1885 |
| Grant Brown | Son | — | 17 | ~1923 |
| Grafton Brown | Son | — | 15 | ~1925 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 32
Middlesex, Massachusetts · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Leon G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Father's Birthplace | New York |
| Mother's Birthplace | New Hampshire |
| Occupation | Clerk |
| Industry | Shipping |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Middlesex, Massachusetts
Head, age 47
Middlesex, Massachusetts · implied b. ~1883 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Leon |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| Age at First Marriage | 22 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | New Hampshire |
| Occupation | Chauffeur |
| Industry | Milk Concern |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 3000 |
| Veteran | No |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Middlesex-County, Massachusetts
Head, age 56
Middlesex-County, Massachusetts · implied b. ~1884 — 6 household members
| Surname | Brown |
| Given Name | Leon F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Milk Delivery |
| Industry | Milk Suppliers |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2000 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 Leon Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Leon Brown
Head · 1940 · age 56 · b. ~1884 · 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
38 people indexed on this census page (nara:1940:m-t0627-01611-00210)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret M. Mcconnell | 56 | Wife | — | Massachusetts |
| 2 | James J. Mcconnell | 31 | Son | — | Massachusetts |
| 3 | Ruth Mcconnell | 16 | Daughter | — | Massachusetts |
| 4 | Joseph Mcconnell | 14 | Son | — | Massachusetts |
| 6 | Walter H. Aday | 36 | Head | Carpenter | Newfoundland |
| 7 | Anastasia Aday | 37 | Wife | — | Newfoundland |
| 8 | Walter H. Aday | 5 | Son | — | Massachusetts |
| 9 | Ann A. Aday | 3 | Daughter | — | Massachusetts |
| 10 | Laura Palmer | 49 | Head | — | Massachusetts |
| 11 | George Palmer | 72 | Head | Carpenter | Massachusetts |
| 12 | Timothy Ryan | 57 | Head | Ship Machinist | Eire |
| 13 | Josephine C. Ryan | 54 | Wife | — | Massachusetts |
| 14 | Mary Ryan | 33 | Daughter | Waitress | Massachusetts |
| 15 | Helen Ryan | 29 | Daughter | Filing Clerk | Massachusetts |
| 16 | Katherine Ryan | 24 | Daughter | Waitress | Massachusetts |
| 17 | Barbara Ryan | 16 | Daughter | — | Massachusetts |
| 18 | Teresa Ryan | 13 | Daughter | — | Massachusetts |
| 19 | Mary Lou Parkhurst | 4 | Daughter | — | Massachusetts |
| 20 | Emilio R. Campa | 44 | Head | Stone Cutter | Italy |
| 21 | Ethel A. Campa | 42 | Wife | Nurse | Massachusetts |
| 22 | J. Emilio Campa | 19 | Son | Janitor Helper | Massachusetts |
| 23 | Edwin R. Campa | 10 | Son | — | Massachusetts |
| 24 | Teresa St. Denis | 64 | Head | — | Massachusetts |
| 26 | Leon F. Brown THIS PERSON | 56 | Head | Milk Delivery | New Hampshire |
| 27 | Winifred Brown | 55 | Wife | — | Canada-English |
| 28 | Frank Brown | 34 | Son | Milk Delivery | Massachusetts |
| 29 | Graham Brown | 18 | Son | Milk Delivery | Massachusetts |
| 30 | Grant Brown | 17 | Son | — | Massachusetts |
| 31 | Grafton Brown | 15 | Son | — | Massachusetts |
| 32 | Alphonso Martin | 30 | Head | Truck Driver | Massachusetts |
| 33 | Verna Martin | 29 | Wife | — | Canada-English |
| 34 | Pearl Martin | 6 | Daughter | — | Massachusetts |
| 35 | James Mann | 53 | Head | Janitor | Massachusetts |
| 36 | Ethel M. Mann | 47 | Wife | — | Maine |
| 37 | Gertrude E. Mann | 24 | Daughter | Typist | Massachusetts |
| 38 | James H. Mann | 22 | Son | Electrician | Massachusetts |
| 39 | Horace L. Mann | 20 | Son | Trucker Helper | Massachusetts |
| 40 | William W. Mann | 17 | Son | — | 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)