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Leo Brown — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Leo Brown across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 6-person household.
Age 13
b. ~1917
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1917 |
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 1930 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Carroll Brown | Son | — | 18 | ~1912 |
| Leo Brown | Son | — | 13 | ~1917 |
| Grace Brown | Daughter | — | 20 | ~1910 |
| Catherine Brown | Spouse | — | 49 | ~1881 |
| Paul Brown | Son | — | 11 | ~1919 |
| Joseph Brown | Head | — | 51 | ~1879 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
| Surname | Brown |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| 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 Leo Brown across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Leo Brown
Son · 1930 · age 13 · b. ~1917 · Massachusetts
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Sibling
Grace Brown
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carroll Brown
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Brown
Sibling · 1930 · age 11
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel920:0027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Adolf Chaput | 45 | Head | Carpenter | Canada French |
| 2 | Elmire Chaput | 42 | Wife | — | Canada French |
| 3 | William Chaput | 16 | Son | Shoe Worker | Massachusetts |
| 4 | Mary J. Chaput | 11 | Daughter | — | Massachusetts |
| 5 | Warren Chaput | 6 | Son | — | Massachusetts |
| 6 | Joseph Gonsalves | 65 | Head | Carpenter | Canada French |
| 7 | Mary Gonsalves | 53 | Wife | — | Canada French |
| 8 | Leo Gonsalves | 5 | Grandson | — | Massachusetts |
| 9 | John Zygielski | 41 | Head | Weaver | Poland |
| 10 | Johanna Zygielski | 33 | Wife | — | Poland |
| 11 | Janina Zygielski | 12 | Daughter | — | Massachusetts |
| 12 | Felicia Zygielski | 7 | Daughter | — | Massachusetts |
| 13 | Stella Zygielski | 6 | Daughter | — | Massachusetts |
| 14 | Wanda Zygielski | 3 | Daughter | — | Massachusetts |
| 15 | John Zygielski | 1 | Son | — | Massachusetts |
| 16 | Karolina Krysiak | 48 | Head | Mangler | Poland |
| 17 | Louis Krysiak | 27 | Son | — | Massachusetts |
| 18 | John Krysiak | 21 | Son | — | Massachusetts |
| 19 | Anna Krysiak | 18 | Daughter | — | Massachusetts |
| 20 | Agnes Krysiak | 12 | Daughter | — | Massachusetts |
| 21 | Shirley Banykewich | 5 | Lodger | — | Massachusetts |
| 22 | Katarzyna Pikula | 58 | Head | — | Poland |
| 23 | John Pikula | 25 | Son | — | Massachusetts |
| 24 | Frank Pikula | 19 | Son | Shoe Worker | Massachusetts |
| 25 | Adam Lipa | 33 | Head | Laborer | Poland |
| 26 | Mary Lipa | 32 | Wife | — | Poland |
| 27 | Leocadia Lipa | 10 | Daughter | — | Massachusetts |
| 28 | Karolina Lipa | 7 | Daughter | — | Massachusetts |
| 29 | Michal Kalinowski | 42 | Head | Spinner | Poland |
| 30 | Wincenta Kalinowski | 38 | Wife | — | Poland |
| 31 | Joseph Kalinowski | 18 | Son | — | Massachusetts |
| 32 | Stanislawa Kalinowski | 13 | Daughter | — | Massachusetts |
| 33 | Joseph Brown | 51 | Head | Fixer | New York |
| 34 | Catherine Brown | 49 | Wife | Spinner | Massachusetts |
| 35 | Grace Brown | 20 | Daughter | Baker | Massachusetts |
| 36 | Carroll Brown | 18 | Son | — | Massachusetts |
| 37 | Leo Brown THIS PERSON | 13 | Son | — | Massachusetts |
| 38 | Paul Brown | 11 | Son | — | Massachusetts |
| 39 | Joseph Milewski | 39 | Head | Laborer | Poland |
| 40 | Anna Milewski | 33 | Wife | — | Poland |
| 41 | Joseph Jr. Milewski | 11 | Son | — | New York |
| 42 | Anastasia Milewski | 9 | Daughter | — | Massachusetts |
| 43 | Stanislaw Milewski | 6 | Son | — | Massachusetts |
| 44 | Walter Milewski | 5 | Son | — | Massachusetts |
| 45 | Stanislaw Slys | 41 | Head | Weaver | Poland |
| 46 | Maryanna Slys | 37 | Wife | Weaver | Poland |
| 47 | Lucyna Slys | 13 | Daughter | — | Massachusetts |
| 48 | Wladislawa Slys | 9 | Daughter | — | Massachusetts |
| 49 | Konstantin Butas | 39 | Head | Laborer | Lithuania |
| 50 | Elena Butas | 35 | Wife | — | Lithuania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)