FS
Florence Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Florence Smith across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Smith |
| Given Name | Florence |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1900 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Florence | Age | Birth yr |
|---|---|---|---|---|
| Florence Smith | Daughter | — | 19 | ~1921 |
| Margaret Smith | Daughter | — | 21 | ~1919 |
| Charles Smith | Head | — | 43 | ~1897 |
| Florence Smith | Spouse | — | 40 | ~1900 |
Census Appearances
1910
Middlesex, Massachusetts
Other, age 9
Middlesex, Massachusetts · implied b. ~1901 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Freda H |
| Relationship to Head | Granddaughter |
| Sex | F |
| 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 |
1920
Middlesex, Massachusetts
Other, age 19
Middlesex, Massachusetts · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Florence |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Other, age 30
Middlesex, Massachusetts · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Florence M |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 19 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 40
Middlesex-County, Massachusetts · implied b. ~1900 — 4 household members
| Surname | Smith |
| Given Name | Florence |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Industry | 0 |
| Highest Grade | 8 |
| 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 Florence Smith across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Florence Smith
Spouse · 1940 · age 40 · b. ~1900 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01704-00075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Angelo Costanza | 21 | Son | Trucking | Massachusetts |
| 42 | Joseph Costanza | 14 | Son | — | Massachusetts |
| 43 | Charles Smith | 43 | Head | Truck Driver | Massachusetts |
| 44 | Florence Smith THIS PERSON | 40 | Wife | — | Massachusetts |
| 45 | Margaret Smith | 21 | Daughter | — | Massachusetts |
| 46 | Florence Smith | 19 | Daughter | Clerk | Massachusetts |
| 47 | John C. Long | 68 | Head | Leather Handler | State (Eire) |
| 48 | Catherine R. Long | 31 | Daughter | Typist | Massachusetts |
| 49 | Dorothy M. Long | 29 | Daughter | Head | Massachusetts |
| 50 | William H. Long | 22 | Son | Agent | Massachusetts |
| 51 | John P. Long | 20 | Son | Office Boy | Massachusetts |
| 52 | Charles Prescott | 66 | Head | Laborer | Massachusetts |
| 53 | Viola Prescott | 34 | Daughter | — | Massachusetts |
| 54 | Anna A. Fisher | 65 | Sister | — | Massachusetts |
| 55 | Nilo Lenzi | 71 | Head | Shoe Repairing | Italy |
| 56 | Michelina Lenzi | 60 | Wife | — | Italy |
| 57 | Emma Lenzi | 24 | Daughter | Baking | Massachusetts |
| 58 | Carolyn Del Grosso | 29 | Daughter | — | Massachusetts |
| 59 | Ernest Del Grosso | 14 | Grandson | — | Massachusetts |
| 60 | James Mahoney | 72 | Head | — | State (Eire) |
| 61 | Anna Mahoney | 62 | Wife | — | State (Eire) |
| 62 | Josephine Mahoney | 31 | Daughter | Nurse | Massachusetts |
| 63 | Margaret Mahoney | 28 | Daughter | Telephone Operator | Massachusetts |
| 64 | Daniel Mahoney | 26 | Son | Brakeman | Massachusetts |
| 65 | Gerald Mahoney | 20 | Son | New Worker | Massachusetts |
| 66 | Frances Mahoney | 19 | Daughter | New Worker | Massachusetts |
| 67 | Patrick Kelly | 52 | Head | Painter | State (Eire) |
| 68 | Mary Kelly | 52 | Wife | — | Rhode Island |
| 69 | Patrick Fitzpatrick | 73 | Head | — | Irish Free State |
| 70 | Mary Fitzpatrick | 66 | Wife | — | State (Eire) |
| 71 | Mary E. Fitzpatrick | 36 | Daughter | Supervisor Nurse | New Hampshire |
| 72 | Alice Fitzpatrick | 26 | Daughter | Elementary School | New Hampshire |
| 73 | James Wells | 47 | Head | — | Massachusetts |
| 74 | Mary Wells | 50 | Wife | — | Massachusetts |
| 75 | Harold Wells | 26 | Son | Shipper | Massachusetts |
| 76 | Richard Marshall | 26 | Head | Watchman | Massachusetts |
| 77 | Dorothy Marshall | 23 | Wife | Clerk | Massachusetts |
| 78 | Harold Wells | 42 | Uncle | — | Massachusetts |
| 79 | Alec Zacharchuk | 52 | Head | Presser | Russia |
| 80 | Celia Zacharchuk | 50 | Wife | — | Russia |
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)