TK
Thomas Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Thomas Kelly across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & Gertrude — first a son (b.~1917), then head of a 11-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Kelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | SOMERVILLE |
| 1935 Residence (County) | MIDDLESEX |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Somerville |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Rita Kelly | Daughter | — | 22 | ~1918 |
| Margaret Kelly | Daughter | — | 13 | ~1927 |
| Catherine Kelly | Daughter | — | 12 | ~1928 |
| Helen Kelly | Daughter | — | 18 | ~1922 |
| Teresa Kelly | Daughter | — | 16 | ~1924 |
| Anna Kelly | Daughter | — | 20 | ~1920 |
| Mary Kelly | Daughter | — | 19 | ~1921 |
| Patrick Kelly | Head | — | 53 | ~1887 |
| Thomas Kelly | Son | — | 23 | ~1917 |
| Joseph Kelly | Son | — | 10 | ~1930 |
| Annie Kelly | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 2
Suffolk, Massachusetts · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 13
Suffolk, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Thomas |
| 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 — 11 household members
| Surname | Kelly |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | SOMERVILLE |
| 1935 Residence (County) | MIDDLESEX |
| Occupation | Chauffeur |
| Industry | Trucking |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1000 |
| Highest Grade | Hs 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 Thomas Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Kelly (~0.92 confidence) and mother Gertrude Kelly (~0.92 confidence) and mother Annie Kelly (~0.92 confidence) and father Patrick Kelly (~0.92 confidence) and father Patrick Kelly (~0.92 confidence) and mother Elizabeth Kelly (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Kelly
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Gertrude Kelly
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Annie Kelly
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Patrick Kelly
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Patrick Kelly
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Kelly
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Kelly
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Catherine Kelly
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Kelly
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kelly
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Kelly
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kelly
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Kelly
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kelly
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kelly
Sibling · 1940 · age 18
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-t0627-01703-00317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary E. Goggin | 3 | Daughter | — | Massachusetts |
| 42 | Gerald Byrne | 41 | Head | Accountant | Newfoundland |
| 43 | Christine Byrne | 36 | Wife | — | Massachusetts |
| 44 | Christine Byrne | 15 | Daughter | — | Massachusetts |
| 45 | Gerard Byrne | 13 | Son | — | Massachusetts |
| 46 | Catherine Holland | 67 | Head | — | Eire |
| 47 | Kay Holland | 36 | Daughter | Operator | Massachusetts |
| 48 | Mary Holland | 32 | Daughter | — | Massachusetts |
| 49 | Joseph Holland | 31 | Son | Packer | Massachusetts |
| 50 | Della Shepard | 50 | Lodger | — | Eire |
| 51 | Thomas Shepard | 17 | Lodger | — | Massachusetts |
| 52 | Patrick Kelly | 53 | Head | Chauffeur | Eire |
| 53 | Annie Kelly | 55 | Wife | — | Eire |
| 54 | Thomas Kelly THIS PERSON | 23 | Son | Chauffeur | Massachusetts |
| 55 | Rita Kelly | 22 | Daughter | Filing | Massachusetts |
| 56 | Anna Kelly | 20 | Daughter | — | Massachusetts |
| 57 | Mary Kelly | 19 | Daughter | — | Massachusetts |
| 58 | Helen Kelly | 18 | Daughter | Typist | Massachusetts |
| 59 | Teresa Kelly | 16 | Daughter | — | Massachusetts |
| 60 | Margaret Kelly | 13 | Daughter | — | Massachusetts |
| 61 | Catherine Kelly | 12 | Daughter | — | Massachusetts |
| 62 | Joseph Kelly | 10 | Son | — | Massachusetts |
| 63 | Carroll Martin | 49 | Head | Mechanic | Vermont |
| 64 | Margaret Martin | 50 | Wife | Marker | Eire |
| 65 | Wilfred Tapley | 35 | Head | Testers | Maine |
| 66 | Dorothy Tapley | 33 | Wife | — | New York |
| 67 | Wilfred Jr Tapley | 5 | Son | — | Maine |
| 68 | John F. Johnson | 67 | Head | — | Maine |
| 69 | Elizabeth C. Johnson | 65 | Wife | — | Rhode Island |
| 70 | Dorothy Johnson | 25 | Daughter | Waitress | Massachusetts |
| 71 | Helen E. Babin | 52 | Head | — | Massachusetts |
| 72 | Eugene R. Babin | 26 | Son | Store Room Clerk | Massachusetts |
| 73 | Ralph H. Bird | 24 | Lodger | Sausage Packer | Massachusetts |
| 74 | Michael Mullaney | 76 | Head | Custodian | Eire |
| 75 | Bridget Mullaney | 75 | Wife | — | Eire |
| 76 | John Mullaney | 40 | Son | Custodian | Massachusetts |
| 77 | Edward Fitzpatrick | 41 | Head | Draftsman | Massachusetts |
| 78 | Charles J. Gregor | 63 | Head | Tailor | Denmark |
| 79 | Clara Gregor | 54 | Wife | — | Canada English |
| 80 | Clarence H. Gregor | 28 | Son | Chauffeur | Massachusetts |
Pedigree Summary
Thomas + 8 siblings
Gen 1 · 6 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)