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Lawrence Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Lawrence Brown across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1911), then head of a 2-person household.
Age 29
b. ~1911
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Brown |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Laborer |
| Industry | sewer WPA Project |
| Class of Worker | GW |
| Hours Worked | 5 |
| Income (1939) | 607 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1911 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lawrence | Age | Birth yr |
|---|---|---|---|---|
| William Brown | Head | — | 70 | ~1870 |
| Lawrence Brown | Son | — | 29 | ~1911 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 9
Suffolk, Massachusetts · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Lawrence J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 19
Suffolk, Massachusetts · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Laborer |
| Industry | Pipe shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 29
Suffolk-County, Massachusetts · implied b. ~1911 — 2 household members
| Surname | Brown |
| Given Name | Lawrence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea city |
| 1935 Residence (County) | Suffolk |
| Occupation | Laborer |
| Industry | sewer WPA Project |
| Class of Worker | GW |
| Hours Worked | 5 |
| Income (1939) | 607 |
| Highest Grade | H 2 |
| 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 Lawrence Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Brown (~0.92 confidence) and father William Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Brown
b. ~1870
Source father
● Household
· direct · ~0.92
Father
William Brown
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lawrence Brown
Son · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01641-00087)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Theresa L Holland | 14 | Daughter | — | Massachusetts |
| 42 | Mary E Holland | 11 | Daughter | — | Massachusetts |
| 43 | Eugene Holland | 9 | Son | — | Massachusetts |
| 44 | Robert C O'Neil | 26 | Head | Driver | Connecticut |
| 45 | Anastasia G O'Neil | 27 | Wife | — | Massachusetts |
| 46 | Barbara A O'Neil | 2 | Daughter | — | Massachusetts |
| 47 | Robert C Jr O'Neil | 1 | Son | — | Massachusetts |
| 48 | Albert B Sharron | 74 | Head | — | Canada French |
| 49 | Zoe Sharron | 75 | Wife | — | Canada French |
| 50 | James Lake | 80 | Head | Longshoreman | Newfoundland |
| 51 | Anna May Lake | 75 | Wife | — | Newfoundland |
| 52 | Earl E Edens | 34 | Head | Mechanic | N Carolina |
| 53 | Irene M Edens | 28 | Wife | — | Massachusetts |
| 54 | Jr. Earl E Edens | 9 | Son | — | Massachusetts |
| 55 | John E Fitzpatrick | 41 | Head | Ship Fitter | Massachusetts |
| 56 | Frances M Fitzpatrick | 36 | Wife | — | Massachusetts |
| 57 | Jr. John E Fitzpatrick | 13 | Son | — | Massachusetts |
| 58 | William J Fitzpatrick | 50 | Brother | Actor | Massachusetts |
| 59 | Cornelius Donovan | 71 | Head | — | Eire |
| 60 | Nellie Donovan | 63 | Wife | — | Eire |
| 61 | Agnes Donovan | 38 | Daughter | Operator | Massachusetts |
| 62 | Edwin Donovan | 32 | Son | Stitcher | Massachusetts |
| 63 | Leo Donovan | 30 | Son | Postal Clerk | Massachusetts |
| 64 | Ambrose Donovan | 25 | Son | Molder | Massachusetts |
| 65 | William Brown | 70 | Head | — | Massachusetts |
| 66 | Lawrence Brown THIS PERSON | 29 | Son | Laborer | Massachusetts |
| 67 | Adam Olbrys | 57 | Head | — | Poland |
| 68 | Frances Olbrys | 54 | Wife | — | Poland |
| 69 | Theodore Olbrys | 29 | Head | Fish Smoker | Massachusetts |
| 70 | Anna Olbrys | 27 | Wife | — | Massachusetts |
| 71 | Nancy Olbrys | 5 | Daughter | — | Massachusetts |
| 72 | Theodore Olbrys | 4 | Son | — | Massachusetts |
| 73 | Joseph Olbrys | 1 | Son | — | Massachusetts |
| 74 | Charles Olbrys | 22 | Head | Fish Smoker | Massachusetts |
| 75 | Emily Olbrys | 19 | Wife | — | Massachusetts |
| 76 | Frances Geary | 40 | Head | Laborer | Massachusetts |
| 77 | Mary H Geary | 31 | Wife | — | Maine |
| 78 | Frances J. Jr. Geary | 11 | Son | — | Massachusetts |
| 79 | Mary T Geary | 9 | Daughter | — | Massachusetts |
| 80 | Magaret H Geary | 5 | Daughter | — | Massachusetts |
Pedigree Summary
Lawrence
Gen 1 · 3 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)