JF
John Foster — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Foster across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Elizabeth & Ellen — first a head (b.~1895), then head of a 8-person household.
Age 45
b. ~1895
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Foster |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville (city) |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Shipper |
| Industry | Retail Refrigeration |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Shipper |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1895 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Foster | Daughter | — | 15 | ~1925 |
| Eleanor Foster | Daughter | — | 21 | ~1919 |
| John Foster | Head | — | 45 | ~1895 |
| Ronald Foster | Son | — | 5 | ~1935 |
| Norman Foster | Son | — | 16 | ~1924 |
| Alfred Foster | Son | — | 13 | ~1927 |
| Warren Foster | Son | — | 19 | ~1921 |
| Mary Foster | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 25
Middlesex, Massachusetts · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | John C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | City Hall |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 35
Middlesex, Massachusetts · implied b. ~1895 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Irish Free State |
| Occupation | Chauffeur |
| Industry | Taxi Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 45
Middlesex-County, Massachusetts · implied b. ~1895 — 8 household members
| Surname | Foster |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville (city) |
| 1935 Residence (County) | Middlesex |
| Occupation | Shipper |
| Industry | Retail Refrigeration |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 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 John Foster across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Foster (~0.92 confidence) and mother Ellen Foster (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Foster
b. ~1859
Source mother
● Household
· direct · ~0.92
Mother
Ellen Foster
b. ~1860
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Foster
Head · 1940 · age 45 · b. ~1895 · 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-t0627-01705-00223)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Mcneill | 57 | Head | Stock Clerk | Canada English |
| 42 | Margaret S. Mcneill | 59 | Wife | House Keeper | Canada English |
| 43 | Daniel Killop | 62 | Boarder | — | Canada English |
| 44 | Ruth Mcinnis | 11 | Boarder | — | Massachusetts |
| 45 | Joan Moore | 5 | Boarder | — | Massachusetts |
| 46 | Gertrude Moore | 5 | Boarder | — | Massachusetts |
| 47 | Rose Corrigan | 3 | Boarder | — | Massachusetts |
| 48 | Joseph Buckley | 1 | Boarder | — | Massachusetts |
| 49 | Alfred Ciamitello | 59 | Head | Musician | Italy |
| 50 | Caroline Ciamitello | 58 | Wife | — | Italy |
| 51 | Arthur Ciamitello | 25 | Son | Machinist | Massachusetts |
| 52 | Fortunato Ciamitello | 21 | Son | New Worker | Massachusetts |
| 53 | Mary S. Ciamitello | 17 | Daughter | — | Massachusetts |
| 54 | Alfred A. Boudreau | 38 | Head | Wine Maker | Massachusetts |
| 55 | Nannie M. Boudreau | 38 | Wife | — | Virginia |
| 56 | Nancy Boudreau | 15 | Daughter | — | New York |
| 57 | Don Boudreau | 10 | Son | — | Massachusetts |
| 58 | Evelyn Boudreau | 3 | Daughter | — | Massachusetts |
| 59 | Joseph Varney | 31 | Head | Chauffer | Massachusetts |
| 60 | Martha A. Varney | 24 | Wife | — | Massachusetts |
| 61 | Judith L. Varney | 0 | Daughter | — | Massachusetts |
| 62 | Arthur Heridly | 51 | Head | Meat Cutter | Massachusetts |
| 63 | Dorothy J. Heridly | 34 | Wife | — | Massachusetts |
| 64 | Frances Heridly | 7 | Daughter | — | Massachusetts |
| 65 | Arthur Heridly | 5 | Son | — | Massachusetts |
| 66 | Robert Deighton | 74 | Head | — | Canada English |
| 67 | Gladys Deighton | 49 | Wife | — | Massachusetts |
| 68 | John F. Foster THIS PERSON | 45 | Head | Shipper | Massachusetts |
| 69 | Mary E. Foster | 45 | Wife | — | Massachusetts |
| 70 | Eleanor Foster | 21 | Daughter | — | Massachusetts |
| 71 | Warren H. Foster | 19 | Son | Machinist | Massachusetts |
| 72 | Norman G.T. Foster | 16 | Son | New Worker | Massachusetts |
| 73 | Eleanor Foster | 15 | Daughter | — | Massachusetts |
| 74 | Alfred Foster | 13 | Son | — | Massachusetts |
| 75 | Ronald C. Foster | 5 | Son | — | Massachusetts |
| 76 | Emmett Rowe | 33 | Head | Shipper | Canada English |
| 77 | Nora D. Rowe | 34 | Sister | Nurse R.N. | Canada English |
| 78 | Alexander Watson | 52 | Head | Inspector | Scotland |
| 79 | Mildred Watson | 52 | Wife | — | Massachusetts |
| 80 | John T. Watson | 23 | Son | Teacher | Massachusetts |
Pedigree Summary
John
Gen 1 · 2 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)