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Carl Nelson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Carl Nelson across the 1920, 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary & John — first a son (b.~1909), then head of a 9-person household.
Age 21
b. ~1909
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| 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 |
| Additional Details | |
| Occupation | Printer |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Printer |
| Township / Ward | Newton City |
| Est. Birth Year | ~1909 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Carl | Age | Birth yr |
|---|---|---|---|---|
| May Nelson | Daughter | — | 16 | ~1914 |
| Ruth Nelson | Daughter | — | 14 | ~1916 |
| John Nelson | Head | — | 54 | ~1876 |
| Ingeborg Nelson | Other | — | 51 | ~1879 |
| John Nelson | Son | — | 23 | ~1907 |
| Carl Nelson | Son | — | 21 | ~1909 |
| Stanley Nelson | Son | — | 9 | ~1921 |
| Alf Nelson | Son | — | 18 | ~1912 |
| Sigurd Nelson | Son | — | 9 | ~1921 |
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 |
1930
Middlesex, Massachusetts
Son, age 21
Middlesex, Massachusetts · implied b. ~1909 — 9 household members
| 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 |
Son, age 32
Middlesex-County, Massachusetts · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| 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 Carl 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
Carl Nelson
Son · 1930 · age 21 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
John Nelson
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
May Nelson
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alf Nelson
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Nelson
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Nelson
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sigurd Nelson
Sibling · 1930 · age 9
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel926:0666)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alice Lennon | 30 | Daughter | Assistant Pastor | Massachusetts |
| 2 | William Lennon | 28 | Son | Salesman | Massachusetts |
| 3 | Joseph Lennon | 25 | Son | Stenographer | Massachusetts |
| 4 | Peter A. Lennon | 44 | Head | Conductor | Massachusetts |
| 5 | Alice Lennon | 37 | Wife-H | — | Massachusetts |
| 6 | Alice Lennon | 13 | Daughter | — | Massachusetts |
| 7 | Peter A. Lennon | 11 | Son | — | Massachusetts |
| 8 | Daniel Lennon | 9 | Son | — | Massachusetts |
| 9 | Mary E. Lennon | 6 | Daughter | — | Massachusetts |
| 10 | George Lennon | 4 | Son | — | Massachusetts |
| 11 | Rose Lennon | 19 | Boarder | Casual Housework | Massachusetts |
| 12 | James Morris | 70 | Head | — | Ireland Free State |
| 13 | Catherine E. Morris | 53 | Daughter | — | Ireland Free State |
| 14 | Mary A. Morris | 51 | Daughter | Inspector | Ireland Free State |
| 15 | Reginald P. Morris | 23 | Grandson | Plumber | Ireland Free State |
| 16 | James A. Dearstyne | 52 | Head | Building | Canada-English |
| 17 | Charlotte B. Dearstyne | 48 | Wife-H | — | Canada-English |
| 18 | Eva M. Dearstyne | 18 | Daughter | Stenographer | Massachusetts |
| 19 | James D. Dearstyne | 15 | Son | — | Massachusetts |
| 20 | Norman Dearstyne | 8 | Son | — | Massachusetts |
| 21 | Jean E. Dearstyne | 5 | Daughter | — | Massachusetts |
| 22 | Walter S. Haywood | 50 | Brother-in-law | Carpenter | Canada-English |
| 23 | Robert Grant | 29 | Head | Mechanic | Massachusetts |
| 24 | Charlotte Grant | 22 | Wife-H | — | Vermont |
| 25 | Robert J. Grant | 3 | Son | — | Massachusetts |
| 26 | Arthur E. Grant | 2 | Son | — | Massachusetts |
| 27 | Lorraine Grant | 0 | Daughter | — | Massachusetts |
| 28 | Thomas A. Hallisey | 36 | Head | Metal Plant | Massachusetts |
| 29 | Elizabeth Hallisey | 41 | Wife-H | — | Massachusetts |
| 30 | Marjorie P. Hallisey | 5 | Daughter | — | Massachusetts |
| 31 | Patrick Keefe | 70 | Head | — | Ireland Free State |
| 32 | Mary Keefe | 71 | Wife-H | — | Ireland Free State |
| 33 | Mary Keefe | 39 | Daughter | Bookkeeper | Massachusetts |
| 34 | John Keefe | 36 | Son | Mason | Massachusetts |
| 35 | Theresa G. Keefe | 35 | Daughter | Stenographer | Massachusetts |
| 36 | John Nelson | 54 | Head | Polisher | Sweden |
| 37 | Ingeborg F. Nelson | 51 | Wife-H | — | Sweden |
| 38 | John E. Nelson | 23 | Son | Photo Engraver | Massachusetts |
| 39 | Carl A. Nelson THIS PERSON | 21 | Son | Printer | Massachusetts |
| 40 | Alf E. Nelson | 18 | Son | Printer | Massachusetts |
| 41 | May E. Nelson | 16 | Daughter | — | Massachusetts |
| 42 | Ruth Nelson | 14 | Daughter | — | Massachusetts |
| 43 | Sigurd V. Nelson | 9 | Son | — | Massachusetts |
| 44 | Stanley W. Nelson | 9 | Son | — | Massachusetts |
| 45 | Timothy Tierney | 63 | Head | Foreman | Ireland Free State |
| 46 | Catherine Tierney | 53 | Wife-H | — | Ireland Free State |
| 47 | John J. Tierney | 32 | Son | Machinist | Massachusetts |
| 48 | Alice Tierney | 26 | Daughter | Painter | Massachusetts |
| 49 | Agatha J. Tierney | 23 | Daughter | Stenographer | Massachusetts |
| 50 | Thomas Tierney | 20 | Son | Weigher | Massachusetts |
Related Census Records
Pedigree Summary
Carl + 6 siblings
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 1930 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)