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Charles Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Charles Nelson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary & John — first a son (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Nelson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Meat Packing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Mary Nelson | Head | — | 72 | ~1868 |
| Charles Nelson | Son | — | 32 | ~1908 |
| Fred Nelson | Son | — | 34 | ~1906 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Carl G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Son, age 21
Middlesex, Massachusetts · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Carl A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Printer |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 32
Middlesex-County, Massachusetts · implied b. ~1908 — 3 household members
| Surname | Nelson |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | Laborer |
| Industry | Meat Packing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 226 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Charles Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Nelson (~0.92 confidence) and father John Nelson (~0.92 confidence) and father John Nelson (~0.92 confidence) and mother Johanna Nelson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Nelson
b. ~1868
Source mother
● Household
· direct · ~0.92
Father
John Nelson
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Nelson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Johanna Nelson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Nelson
Son · 1940 · age 32 · b. ~1908 · Massachusetts
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Sibling
Fred Nelson
Sibling · 1940 · age 34
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-t0627-01702-00659)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Farrell | 9 | Son | — | Massachusetts |
| 42 | Mary Nelson | 72 | Head | — | Eire |
| 43 | Fred Nelson | 34 | Son | Truck Driver | Massachusetts |
| 44 | Charles Nelson THIS PERSON | 32 | Son | Laborer | Massachusetts |
| 45 | Leo Jungferman | 58 | Head | Laborer | Russia |
| 46 | Josephine Jungferman | 50 | Wife | — | Russia |
| 47 | Leo Jungferman | 25 | Son | Laborer | Massachusetts |
| 48 | John Jungferman | 20 | Son | Attendant | Massachusetts |
| 49 | Jenny Jungferman | 17 | Daughter | — | Massachusetts |
| 50 | Edward Jungferman | 14 | Son | — | Massachusetts |
| 51 | Florence Hornik | 39 | Head | — | Massachusetts |
| 52 | John Hornik | 19 | Son | Baker | Massachusetts |
| 53 | Charles Hornik | 16 | Son | — | Massachusetts |
| 54 | James Hornik | 9 | Son | — | Massachusetts |
| 55 | Ralph Hornik | 6 | Son | — | Massachusetts |
| 56 | Daniel Connolly | 57 | Head | — | Eire |
| 57 | Julia Connolly | 56 | Wife | — | Eire |
| 58 | Cornelius Connolly | 27 | Son | Clerk | Massachusetts |
| 59 | James (Ab) Connolly | 18 | Son | Laborer | Massachusetts |
| 60 | Catherine Connolly | 16 | Daughter | — | Massachusetts |
| 61 | Wilfred Gauthier | 30 | Head | Laborer | Massachusetts |
| 62 | Dorothy Gauthier | 29 | Wife | — | Massachusetts |
| 63 | Barbara Gauthier | 5 | Daughter | — | Massachusetts |
| 64 | Manuel Martins | 31 | Head | Peel Maker | Portugal |
| 65 | Mary Martins | 28 | Wife | Factory Worker | Portugal |
| 66 | Dorothy Martins | 4 | Daughter | — | Massachusetts |
| 67 | John Mcmahon | 39 | Head | Office Worker | Massachusetts |
| 68 | Hannah Mcmahon | 40 | Wife | — | Eire |
| 69 | Gladys Mcmahon | 17 | Daughter | — | Massachusetts |
| 70 | Marie Mcmahon | 13 | Daughter | — | Massachusetts |
| 71 | John Mcmahon | 10 | Son | — | Massachusetts |
| 72 | Thomas Mcmahon | 8 | Son | — | Massachusetts |
| 73 | William Mcmahon | 6 | Son | — | Massachusetts |
| 74 | Philip Mcmahon | 3 | Son | — | Massachusetts |
| 75 | Clith Smith | 40 | Head | — | Massachusetts |
| 76 | Irene Smith | 20 | Daughter | Secretary | Massachusetts |
| 77 | Dorothy Smith | 18 | Daughter | Secretary | Massachusetts |
| 78 | Jane Smith | 17 | Daughter | — | Massachusetts |
| 79 | Edith Smith | 15 | Daughter | — | Massachusetts |
| 80 | Edwin Smith | 13 | Son | — | Massachusetts |
Related Census Records
Pedigree Summary
Charles + 1 sibling
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)