JN
John Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Nelson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Nels & John — first a son (b.~1916), then head of a 2-person household.
Age 24
b. ~1916
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Nelson |
| Given Name | John N |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden (city) |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Machinist |
| Township / Ward | Malden City |
| Est. Birth Year | ~1916 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elin Nelson | Head | — | 60 | ~1880 |
| John Nelson | Son | — | 24 | ~1916 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 14
Middlesex, Massachusetts · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | John N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 2 household members
| Surname | Nelson |
| Given Name | John N |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden (city) |
| 1935 Residence (County) | Middlesex |
| Occupation | Machinist |
| Industry | Machine Shop |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 800 |
| 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 John Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Nelson (~0.92 confidence) and father John Nelson (~0.92 confidence) and mother Elin Nelson (~0.92 confidence) and mother Elsie Nelson (~0.92 confidence) and mother Ida Nelson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Nelson
b. ~1866
Source father
● Household
· direct · ~0.92
Father
John Nelson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Elin Nelson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Elsie Nelson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Ida Nelson
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nelson
Son · 1940 · age 24 · b. ~1916 · 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
34 people indexed on this census page (nara:1940:m-t0627-01609-00364)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J. Tenney Spofford | 60 | Head | Patrolman | Massachusetts |
| 2 | Matilda B Spofford | 60 | Wife | — | Maine |
| 3 | Barbara Spofford | 34 | Daughter | — | Massachusetts |
| 4 | William G Horton | 45 | Head | Sheet Metal Worker | Massachusetts |
| 5 | Edith T Horton | 38 | Wife | — | Canada-English |
| 6 | Lester W Horton | 21 | Son | Machinist | Massachusetts |
| 7 | Marjorie A Horton | 19 | Daughter | Assembler | Massachusetts |
| 8 | Elizabeth A Whitely | 68 | Head | — | England |
| 9 | Mary J Ollis | 62 | Head | — | Eire |
| 10 | Mary J Ollis | 40 | Daughter | Hostess | Massachusetts |
| 11 | John F Ollis | 36 | Son | Bookbinder | Massachusetts |
| 12 | Albert Ollis | 34 | Son | Printer | Massachusetts |
| 13 | Ethel Ollis | 22 | Daughter | — | Massachusetts |
| 14 | Julie Berube | 34 | Lodger | Waitress | Massachusetts |
| 15 | John A Knudsen | 54 | Head | Carpenter | Norway |
| 16 | Ragna A Knudsen | 62 | Wife | — | Norway |
| 17 | William V Snodgrass | 31 | Head | Electrician | Rhode Island |
| 18 | Edith F Snodgrass | 32 | Wife | Tester | New Hampshire |
| 19 | Anna C Iller | 66 | Head | — | Sweden |
| 20 | Hanna Moberg | 71 | Head | — | Sweden |
| 21 | Frances Johnson | 39 | Head | Fancy Ironing | Italy |
| 22 | Joseph J Starr | 18 | Son | Usher | New York |
| 23 | William L Starr | 16 | Son | — | Massachusetts |
| 24 | Louis Falabella | 74 | Head | — | Italy |
| 25 | Fortune Falabella | 75 | Wife | — | Italy |
| 26 | Elin M Nelson | 60 | Head | — | Sweden |
| 27 | John N Nelson THIS PERSON | 24 | Son | Machinist | Massachusetts |
| 28 | Edoardo Cersosimo | 75 | Head | — | Italy |
| 29 | Wilfred Richards | 25 | Head | Painting | Massachusetts |
| 30 | Elizabeth Richards | 19 | Wife | — | Massachusetts |
| 31 | Oscar T Cooper | 36 | Lodger | Engineer | Massachusetts |
| 32 | John E Engberg | 52 | Head | Auto Repair | Sweden |
| 33 | Leonore E Engberg | 51 | Wife | Nurse | Massachusetts |
| 34 | Carl T Engberg | 26 | Son | Auditor | Massachusetts |
Pedigree Summary
John
Gen 1 · 5 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)