TB
Thelma Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Thelma Brown across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Brown |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Haverhill City |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Mary Brown | Daughter | — | 18 | ~1922 |
| Dorothy Brown | Daughter | — | 20 | ~1920 |
| Thelma Brown | Daughter | — | 16 | ~1924 |
| Geraldine Brown | Daughter | — | 9 | ~1931 |
| Alice Brown | Daughter | — | 21 | ~1919 |
| Eileen Brown | Daughter | — | 5 | ~1935 |
| Ruth Brown | Daughter | — | 7 | ~1933 |
| Edwin Brown | Head | — | 58 | ~1882 |
| Kenneth Brown | Son | — | 10 | ~1930 |
| John Brown | Son | — | 14 | ~1926 |
| Mary Brown | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Essex, Massachusetts
Daughter, age 5
Essex, Massachusetts · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Thelma R |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Connecticut |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Daughter, age 16
Essex-County, Massachusetts · implied b. ~1924 — 11 household members
| Surname | Brown |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill city |
| 1935 Residence (County) | Essex |
| Income (1939) | 0 |
| 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 Thelma Brown across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thelma Brown
Daughter · 1940 · age 16 · b. ~1924 · Massachusetts
★ You are viewing this record
Sibling
Eileen Brown
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Brown
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Brown
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Brown
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Brown
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Brown
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Brown
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Brown
Sibling · 1940 · age 20
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01581-00536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Howard A Sullivan | 72 | Head | — | Connecticut |
| 2 | Henrietta Sullivan | 71 | Wife | — | Maine |
| 3 | George Sullivan | 38 | Son | Laborer | Massachusetts |
| 4 | Edwin Brown | 58 | Head | Agent | Connecticut |
| 5 | Mary Brown | 43 | Wife | — | Massachusetts |
| 6 | Alice Brown | 21 | Daughter | — | Massachusetts |
| 7 | Dorothy Brown | 20 | Daughter | — | New York |
| 8 | Mary Brown | 18 | Daughter | — | Massachusetts |
| 9 | Thelma Brown THIS PERSON | 16 | Daughter | — | Massachusetts |
| 10 | John Brown | 14 | Son | — | Massachusetts |
| 11 | Kenneth Brown | 10 | Son | — | Massachusetts |
| 12 | Geraldine Brown | 9 | Daughter | — | Massachusetts |
| 13 | Ruth Brown | 7 | Daughter | — | Massachusetts |
| 14 | Eileen Brown | 5 | Daughter | — | Massachusetts |
| 15 | Jennie Pillsbury | 69 | Head | — | New Hampshire |
| 16 | Annie Murphy | 71 | Head | — | Ireland |
| 17 | William Murphy | 52 | Son | Gardner | Massachusetts |
| 18 | Mary Murphy | 41 | Daughter | — | Massachusetts |
| 19 | Daniel Quinn | 40 | Head | Inspector | Massachusetts |
| 20 | Mary Quinn | 42 | Wife | — | Massachusetts |
| 21 | Abbie Quinn | 76 | Mother | — | Ireland |
| 22 | Clyde Page | 33 | Head | Clerk | New Hampshire |
| 23 | Helen Page | 33 | Wife | — | Massachusetts |
| 24 | Mary Lou Page | 11 | Daughter | — | Massachusetts |
| 25 | Jacqueline Page | 8 | Daughter | — | Massachusetts |
| 26 | Dennis P Collins | 77 | Head | — | Ireland |
| 27 | Annie Collins | 45 | Daughter | Bookkeeper | Massachusetts |
| 28 | Catherine Collins | 42 | Daughter | Stenographer | Massachusetts |
| 29 | Grace Collins | 39 | Daughter | Clerk Typist | Massachusetts |
| 30 | John Hall | 32 | Head | Salesman | Massachusetts |
| 31 | Mary Hall | 35 | Wife | — | Massachusetts |
| 32 | Mary Hall | 3 | Daughter | — | Massachusetts |
| 33 | Ann Hall | 1 | Daughter | — | Massachusetts |
| 34 | Annie Hurley | 74 | Head | — | Ireland |
| 35 | Samuel H Klotzle | 48 | Head | Cashier | Massachusetts |
| 36 | Gladys Klotzle | 49 | Wife | — | Massachusetts |
| 37 | Dana Klotzle | 23 | Son | — | Massachusetts |
| 38 | Virginia Klotzle | 19 | Daughter | — | Massachusetts |
| 39 | Michael Donoghue | 73 | Head | — | Ireland |
| 40 | Margaret Donoghue | 69 | Wife | — | 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)