GC
George Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this George Clark across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Christina — first a head (b.~1891), then head of a 4-person household.
Age 49
b. ~1891
Male
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Clark |
| Given Name | George |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Elec. Light Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Mechanic |
| Township / Ward | Arlington |
| Est. Birth Year | ~1891 |
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 George | Age | Birth yr |
|---|---|---|---|---|
| Ruth Clark | Daughter | — | 15 | ~1925 |
| Helen Clark | Daughter | — | 17 | ~1923 |
| George Clark | Head | — | 49 | ~1891 |
| John Clark | Son | — | 19 | ~1921 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 28
Middlesex, Massachusetts · implied b. ~1892 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Scotland |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | machinist |
| Industry | elevator Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Year of Naturalization | 1908 |
| Birthplace (normalized) | scotland |
1930
Suffolk, Massachusetts
Head, age 39
Suffolk, Massachusetts · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | George M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 29 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Mechanic |
| Industry | Elevator |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Middlesex-County, Massachusetts
Head, age 49
Middlesex-County, Massachusetts · implied b. ~1891 — 4 household members
| Surname | Clark |
| Given Name | George |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Mechanic |
| Industry | Elec. Light Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 George Clark across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Christina Donahue (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Christina Donahue
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Clark
Head · 1940 · age 49 · b. ~1891 · 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-t0627-01601-00120)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Doris E Mead | 27 | Daughter | — | Massachusetts |
| 42 | Edward B Mead | 63 | Head | Laborer | Massachusetts |
| 43 | Marie Mead | 26 | Daughter | Typist | Massachusetts |
| 44 | Philiott|Philiatt Bouchard | 38 | Head | Machinist | Maine |
| 45 | Pauline Bouchard | 32 | Wife | — | Massachusetts |
| 46 | Nora Rowe | 70 | Mother-in-law | — | Ireland |
| 47 | George E Rowe | 29 | Head | Service Repr. | Massachusetts |
| 48 | Grace Rowe | 25 | Wife | — | Massachusetts |
| 49 | George Rowe | 5 | Son | — | Massachusetts |
| 50 | Joan Rowe | 4 | Daughter | — | Massachusetts |
| 51 | Lois Rowe | 2 | Daughter | — | Massachusetts |
| 52 | John Smith | 44 | Head | Chipper | Massachusetts |
| 53 | Ernestine Smith | 43 | Wife | — | Massachusetts |
| 54 | Norma Smith | 17 | Daughter | — | Massachusetts |
| 55 | Phyllis Smith | 15 | Daughter | — | Massachusetts |
| 56 | Jean Smith | 10 | Daughter | — | Massachusetts |
| 57 | Dennis J Callaghan | 38 | Head | Bartender | Ireland |
| 58 | Margaret Callaghan | 29 | Wife | — | Ireland |
| 59 | Mary Callaghan | 6 | Daughter | — | Massachusetts |
| 60 | Margaret Callaghan | 6 | Daughter | — | Massachusetts |
| 61 | Amy Callaghan | 5 | Daughter | — | Massachusetts |
| 62 | John Callaghan | 4 | Son | — | Massachusetts |
| 63 | Eileen Callaghan | 3 | Daughter | — | Massachusetts |
| 64 | George Callaghan | 2 | Son | — | Massachusetts |
| 65 | George Clark THIS PERSON | 49 | Head | Mechanic | Scotland |
| 66 | John Clark | 19 | Son | Truck Driver | Massachusetts |
| 67 | Helen Clark | 17 | Daughter | — | Massachusetts |
| 68 | Ruth Clark | 15 | Daughter | — | Massachusetts |
| 69 | Ernest Doiron | 38 | Head | Gas Station Attendant | Massachusetts |
| 70 | Vesta Doiron | 34 | Wife | — | New York |
| 71 | Arthur Doiron | 8 | Son | — | Massachusetts |
| 72 | Thelma Edgar | 15 | Niece | — | New York |
| 73 | Alfred Standingren | 41 | Head | Chauffeur | Massachusetts |
| 74 | Helen Standingren | 41 | Wife | — | Massachusetts |
| 75 | Sally Standingren | 9 | Daughter | — | Massachusetts |
| 76 | Alfred Standingren | 6 | Son | — | Massachusetts |
| 77 | Ann Standingren | 4 | Daughter | — | Massachusetts |
| 78 | William Staples | 35 | Head | Radio Tech. | New Hampshire |
| 79 | Helen Staples | 34 | Wife | — | Massachusetts |
| 80 | William Jr Staples | 5 | Son | — | Massachusetts |
Pedigree Summary
George
Gen 1 · 1 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)