RP
Robert Porter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Robert Porter across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & Rose — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Porter |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | night filling clerk |
| Industry | First National Stores |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 700 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Night Filling Clerk |
| Township / Ward | Somerville 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Porter | Daughter | — | 21 | ~1919 |
| James Porter | Head | — | 53 | ~1887 |
| Harry Porter | Son | — | 27 | ~1913 |
| Robert Porter | Son | — | 23 | ~1917 |
| Rose Porter | Spouse | — | 53 | ~1887 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 13
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Robert J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 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
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 5 household members
| Surname | Porter |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | night filling clerk |
| Industry | First National Stores |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 700 |
| Highest Grade | H-4 |
| 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 Robert Porter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Porter (~0.92 confidence) and mother Rose Porter (~0.92 confidence) and father James Porter (~0.92 confidence) and mother Rose Porter (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Porter
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Rose Porter
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
James Porter
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Rose Porter
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Porter
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Harry Porter
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Porter
Sibling · 1940 · age 21
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
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-t0627-01704-00238)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Ingalls | 35 | Daughter | Salesgirl | Massachusetts |
| 2 | Timothy Murphy | 57 | Head | Proprietor | Massachusetts |
| 3 | Esther Murphy | 44 | Sister | School Teacher | Massachusetts |
| 4 | Anna H. Murphy | 40 | Sister | School Teacher | Massachusetts |
| 5 | Joseph E. Foley | 54 | Brother-in-law | Statistics Clerk | Massachusetts |
| 6 | Mrs. Ellen Foley | 54 | Sister | — | Massachusetts |
| 7 | Daniel Koren | 77 | Head | — | Ireland |
| 8 | Alice Koren | 67 | Wife | — | Massachusetts |
| 9 | Philip Koren | 39 | Son | Letter Carrier | Massachusetts |
| 10 | William Koren | 36 | Son | Lawyer | Massachusetts |
| 11 | Anna Koren | 24 | Daughter | Stenographer | Massachusetts |
| 12 | Leslie Mcmunn | 33 | Head | Carpenter | Massachusetts |
| 13 | Rose Mcmunn | 25 | Wife | — | Massachusetts |
| 14 | John Quinn | 58 | Head | Highway Street Laborer | Massachusetts |
| 15 | Evelyn Quinn | 20 | Daughter | — | Massachusetts |
| 16 | James Porter | 53 | Head | Sheet Metal Worker | Massachusetts |
| 17 | Rose Porter | 53 | Wife | — | Massachusetts |
| 18 | Harry J. Porter | 27 | Son | Jewelry Salesman | Massachusetts |
| 19 | Robert Porter THIS PERSON | 23 | Son | Night Filling Clerk | Massachusetts |
| 20 | Dorothy Porter | 21 | Daughter | Checker | Massachusetts |
| 21 | Joseph Donovan | 30 | Head | Truck Driver | Massachusetts |
| 22 | Gertrude Donovan | 29 | Wife | — | Massachusetts |
| 23 | Gottlo Berthall | 56 | Head | Seamstress | Germany |
| 24 | Earl Decreny | 53 | Head | Bakery Salesman | Maine |
| 25 | Ethel Decreny | 52 | Wife | — | Massachusetts |
| 26 | Percy H. Prior | 72 | Head | — | Massachusetts |
| 27 | Mary E. Prior | 70 | Wife | — | Massachusetts |
| 28 | William Nichols | 73 | Head | — | Massachusetts |
| 29 | Walter Kelly | 43 | Head | Metal Worker | Massachusetts |
| 30 | Catherine Kelly | 39 | Wife | — | Massachusetts |
| 31 | James Kelly | 15 | Son | — | Massachusetts |
| 32 | James Scullen | 80 | Father-in-law | — | Northern Ireland |
| 33 | Alice Kelly | 74 | Head | — | Canada English |
| 34 | Francis Kelly | 25 | Son | Laborer | Massachusetts |
| 35 | George Geddry | 44 | Head | Mechanic | Massachusetts |
| 36 | Annie Geddry | 40 | Wife | — | Massachusetts |
| 37 | Joseph Geddry | 19 | Son | Grocery Clerk | Massachusetts |
| 38 | Catherine Geddry | 15 | Daughter | — | Massachusetts |
| 39 | Margaret Kelly | 75 | Head | — | Free State Ireland |
| 40 | Agnes Kelly | 42 | Daughter | Secretary | Massachusetts |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 4 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)