IT
Irene Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Irene Thompson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Samuel & Irene — first a daughter (b.~1912), then head of a 5-person household.
Age 28
b. ~1912
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Thompson |
| Given Name | Irene F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | File Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | C-1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | File Clerk |
| Township / Ward | Medford City |
| Est. Birth Year | ~1912 |
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 Irene | Age | Birth yr |
|---|---|---|---|---|
| Edwin Thompson | Son | — | 21 | ~1919 |
| Phyllis Thompson | Daughter | — | 27 | ~1913 |
| Irene Thompson | Spouse | — | 53 | ~1887 |
| Edwin Thompson | Head | — | 50 | ~1890 |
| Irene Thompson | Daughter | — | 28 | ~1912 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 7
Middlesex, Massachusetts · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Irene |
| Relationship to Head | Niece |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| 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
Daughter, age 17
Middlesex, Massachusetts · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Irene E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| 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
Daughter, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 5 household members
| Surname | Thompson |
| Given Name | Irene F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | File Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | C-1 |
| 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 Irene Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Thompson (~0.92 confidence) and mother Irene Thompson (~0.92 confidence) and father Edwin Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Thompson
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Irene Thompson
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Edwin Thompson
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Irene Thompson
Daughter · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Sibling
Edwin Thompson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Thompson
Sibling · 1940 · age 27
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
39 people indexed on this census page (nara:1940:m-t0627-01611-00455)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Matthew Nickerson | 50 | Head | Operator | Massachusetts |
| 42 | Julia Nickerson | 45 | Wife | — | Massachusetts |
| 43 | Ann Nickerson | 17 | Daughter | — | Massachusetts |
| 44 | Matthew Jr Nickerson | 16 | Son | — | Massachusetts |
| 45 | Gerald Nickerson | 10 | Son | — | Massachusetts |
| 46 | Anna S Oliva | 44 | Head | Packer | Philadelphia |
| 47 | Maurice Pacelli | 41 | Brother | — | Philadelphia |
| 48 | Joseph Aucoin | 45 | Head | Mechanic | Nova Scotia |
| 49 | Emma Aucoin | 43 | Wife | — | Nova Scotia |
| 50 | Eleanor Aucoin | 14 | Daughter | — | Massachusetts |
| 52 | Charles Dalphond | 65 | Head | Stockman | Canada-English |
| 53 | Ida Dalphond | 58 | Wife | — | New York |
| 54 | Steven Dalphond | 20 | Son | Fireman | Massachusetts |
| 55 | Genevieve Cruse | 24 | Daughter | — | Massachusetts |
| 56 | James Keddy | 69 | Head | — | Nova Scotia |
| 57 | Amy Keddy | 66 | Wife | — | Nova Scotia |
| 58 | Edwin Rand | 31 | Head | Packer | Massachusetts |
| 59 | Eleanor Rand | 29 | Wife | — | New York |
| 60 | Eleanor G. Rand | 9 | Daughter | — | Massachusetts |
| 61 | Edwin Jr. Rand | 6 | Son | — | Massachusetts |
| 62 | Elaine Rand | 0 | Daughter | — | Massachusetts |
| 63 | Angusena Rand | 55 | Mother | — | Canada-English |
| 64 | Catherine Rand | 18 | Sister | Book Assembler | Massachusetts |
| 65 | Edwin Thompson | 50 | Head | Portable Engineer | Massachusetts |
| 66 | Irene Thompson | 53 | Wife | — | Massachusetts |
| 67 | Irene F. Thompson THIS PERSON | 28 | Daughter | File Clerk | Massachusetts |
| 68 | Phyllis Thompson | 27 | Daughter | Salesgirl | Massachusetts |
| 69 | Edwin F Thompson | 21 | Son | Engineer | Massachusetts |
| 70 | Cecil A. Rose | 54 | Head | Stationary Engineer | England |
| 71 | Elsie Rose | 55 | Wife | — | England |
| 72 | Dorothy Rose | 27 | Daughter | Teacher | Massachusetts |
| 73 | Harold Rose | 23 | Son | Entomologist | Massachusetts |
| 74 | Marjorie Rose | 21 | Daughter | Secretary | Massachusetts |
| 75 | Elizabeth Rose | 12 | Daughter | — | Massachusetts |
| 76 | Thomas Morris | 64 | Head | — | Massachusetts |
| 77 | Mary Morris | 64 | Wife | — | Vermont |
| 78 | Richard Finlayson | 30 | Head | Truck Driver | Massachusetts |
| 79 | Janet Finlayson | 25 | Wife | — | Massachusetts |
| 80 | Gloria Finlayson | 3 | Daughter | — | Massachusetts |
Pedigree Summary
Irene + 2 siblings
Gen 1 · 3 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)