FS
Frederick Smith — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Frederick Smith across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 6-person household.
Age 43
b. ~1887
Male
Head
Born: Maine
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Smith |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 24 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Maine |
| Additional Details | |
| Occupation | Janitor |
| Industry | Office building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Janitor |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1887 |
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 Frederick | Age | Birth yr |
|---|---|---|---|---|
| M Smith | Daughter | — | 18 | ~1912 |
| Frederick Smith | Head | — | 43 | ~1887 |
| Mary Smith | Other | — | 40 | ~1890 |
| John Ahern | Other | — | 41 | ~1889 |
| William Smith | Son | — | 10 | ~1920 |
| Frederick Smith | Son | — | 16 | ~1914 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 32
Middlesex, Massachusetts · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Frederick A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Middlesex, Massachusetts
Head, age 43
Middlesex, Massachusetts · implied b. ~1887 — 6 household members
| Surname | Smith |
| Given Name | Frederick |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 24 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Maine |
| Occupation | Janitor |
| Industry | Office building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Middlesex-County, Massachusetts
Head, age 55
Middlesex-County, Massachusetts · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Fred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Occupation | Office Management |
| Industry | Furnace co.-retail |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1567 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Frederick Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Frederick Smith
Head · 1930 · age 43 · b. ~1887 · Massachusetts
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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:massachusettscensus00reel915:0847)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sparvould Jessie Thibault | 14 | Neice | — | Massachusetts |
| 2 | William R Herbert | 20 | Head | Builder | England |
| 3 | Joseph Medeiros | 60 | Head | Salesman | Portugal |
| 4 | Mary Medeiros | 57 | Wife-H | Laborer | Portugal |
| 5 | John Miguel | 33 | Head | Laborer | Portugal |
| 6 | Emma Miguel | 28 | Wife-H | Shoemaker | Portugal |
| 7 | Manuel Miguel | 10 | Son | — | Massachusetts |
| 8 | Tony Miguel | 8 | Son | — | Massachusetts |
| 9 | Edward Miguel | 5 | Son | — | Massachusetts |
| 10 | Louis Roderick | 28 | Head | Electrician | Portugal |
| 11 | Adeline Roderick | 25 | Wife-H | — | Massachusetts |
| 12 | Emma Silva | 62 | Mother-in-law | — | Portugal |
| 13 | Julia Silva | 20 | Sister-in-law | Filler | Massachusetts |
| 14 | John P Roderick | 37 | Head | Wood Worker | Massachusetts |
| 15 | Mary B Roderick | 35 | Wife-H | — | Canada-English |
| 16 | Mary Branco | 35 | Head-H | — | Portugal |
| 17 | Manuel Branco | 13 | Son | — | Massachusetts |
| 18 | Jessie Branco | 10 | Son | — | Massachusetts |
| 19 | Mary Branco | 9 | Daughter | — | Massachusetts |
| 20 | Alice Branco | 2 | Daughter | — | Massachusetts |
| 21 | John Gelenfer | 75 | Head | Laborer | Irish Free State |
| 22 | Mary E Gelenfer | 67 | Wife-H | — | Massachusetts |
| 23 | Frederick Smith THIS PERSON | 43 | Head | Janitor | Maine |
| 24 | Mary E Smith | 40 | Wife-H | Chocolate Dipper | Massachusetts |
| 25 | M Dorothy Smith | 18 | Daughter | Floor Girl | Massachusetts |
| 26 | Frederick J Smith | 16 | Son | Messenger | Massachusetts |
| 27 | William G Smith | 10 | Son | — | Massachusetts |
| 28 | John Jr Ahern | 41 | Brother-in-law | Messenger | Massachusetts |
| 29 | Mary Art | 58 | Head-H | — | Massachusetts |
| 30 | Mary Flanagan | 42 | Head-H | Cleaning | Irish Free State |
| 31 | Helen Flanagan | 15 | Daughter | Packer | Rhode Island |
| 32 | Joseph Flanagan | 13 | Son | — | Rhode Island |
| 33 | Margaret Flanagan | 11 | Daughter | — | Rhode Island |
| 34 | Daniel Cronin | 54 | Head | — | Irish Free State |
| 35 | Catherine Cronin | 52 | Wife-H | — | Irish Free State |
| 36 | Edward J Tighe | 56 | Head | Laborer | Massachusetts |
| 37 | Ellen Tighe | 54 | Wife-H | — | Irish Free State |
| 38 | Thomas Tighe | 26 | Son | Laborer | Massachusetts |
| 39 | William F Sullivan | 37 | Head | Chauffeur | Massachusetts |
| 40 | Christine Sullivan | 37 | Wife-H | — | Massachusetts |
| 41 | Dorothy Sullivan | 11 | Daughter | — | Massachusetts |
| 42 | Charles Sullivan | 9 | Son | — | Massachusetts |
| 43 | Mary Sullivan | 7 | Daughter | — | Massachusetts |
| 44 | Theresa Sullivan | 2 | Daughter | — | Massachusetts |
| 45 | John Marshall | 46 | Head | Foreman | Massachusetts |
| 46 | Margaret Marshall | 51 | Wife-H | — | Massachusetts |
| 47 | Arthur H Lewis | 28 | Boarder | Chauffeur | Massachusetts |
| 48 | Beatrice Lewis | 23 | Daughter | — | Massachusetts |
| 49 | Margaret O'Leary | 40 | Head-H | — | Irish Free State |
| 50 | Anna O'Leary | 15 | Daughter | — | Massachusetts |
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)