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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 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Nils & Christian — first a son (b.~1905), then head of a 5-person household.
Age 25
b. ~1905
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Nelson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Laborer |
| Industry | Ice business |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Stow Town |
| Est. Birth Year | ~1905 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Carl | Age | Birth yr |
|---|---|---|---|---|
| Mary Nelson | Daughter | — | 24 | ~1906 |
| Emma Nelson | Daughter | — | 23 | ~1907 |
| Christian Nelson | Head | — | 60 | ~1870 |
| Carl Nelson | Son | — | 25 | ~1905 |
| Christina Nelson | Spouse | — | 57 | ~1873 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1905 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Neilson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 14
Middlesex, Massachusetts · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Neilson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 25
Middlesex, Massachusetts · implied b. ~1905 — 5 household members
| Surname | Nelson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Laborer |
| Industry | Ice business |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Nils Neilson (~0.92 confidence) and father Christian Nelson (~0.92 confidence) and mother Caroline Neilson (~0.92 confidence) and mother Christina Nelson (~0.92 confidence) and mother Agnes Neilson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nils Neilson
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Christian Nelson
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Caroline Neilson
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Christina Nelson
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Agnes Neilson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Carl Nelson
Son · 1930 · age 25 · b. ~1905 · Massachusetts
★ You are viewing this record
Sibling
Emma Nelson
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nelson
Sibling · 1930 · age 24
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:massachusettscensus00reel930:0008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Erkkila | 50 | Head | Farmer | Finland |
| 52 | Mary Erkkila | 42 | Wife | — | Finland |
| 53 | Linnea Erkkila | 20 | Daughter | Stenographer | Wyoming |
| 54 | Helen Erkkila | 18 | Daughter | — | Wyoming |
| 55 | Emil Erkkila | 16 | Son | Laborer | Wyoming |
| 56 | Christian Nelson | 60 | Head | Farmer | Denmark |
| 57 | Christina Nelson | 57 | Wife | — | Denmark |
| 58 | Carl Nelson THIS PERSON | 25 | Son | Laborer | Massachusetts |
| 59 | Mary Nelson | 24 | Daughter | Laborer | Massachusetts |
| 60 | Emma Nelson | 23 | Daughter | Laborer | Massachusetts |
| 61 | Simon Urgatis | 57 | Head | Sample Man | Germany |
| 62 | Elsa Urgatis | 55 | Wife | — | Germany |
| 63 | Edward Urgatis | 25 | Son | Farmer | Connecticut |
| 64 | Peter Antunes | 31 | Brother-in-law | Shoe Maker | Germany |
| 65 | Anna Sakmet | 8 | Granddaughter | — | Massachusetts |
| 66 | Edith Cornwell | 5 | Step-daughter | — | Massachusetts |
| 67 | Edward Whitall | 78 | Head | Janitor | England |
| 68 | Margaret Whitall | 82 | Wife | — | England |
| 69 | Josie A. Whitcomb | 70 | Lodger | House Keeper | Massachusetts |
| 70 | Ralph Crowell | 28 | Head | Store-Clerk | Massachusetts |
| 71 | Flora G. Crowell | 27 | Wife | — | Massachusetts |
| 72 | Dorothy A. Crowell | 3 | Daughter | — | Massachusetts |
| 73 | Joyce M. Crowell | 1 | Daughter | — | Massachusetts |
| 74 | Arthur W. Puffer | 47 | Head | Carpenter | Massachusetts |
| 75 | Cora M. Puffer | 40 | Wife | — | Massachusetts |
| 76 | G. Elizabeth Puffer | 11 | Daughter | — | Massachusetts |
| 77 | Minna F. Puffer | 83 | Mother | — | Massachusetts |
| 78 | Ann Hicks | 5 | Lodger | — | Massachusetts |
| 79 | Alice E. Hicks | 3 | Lodger | — | Massachusetts |
| 80 | Nelson R. Roeder | 41 | Head | Carpenter | Virginia |
| 81 | Blanche Roeder | 41 | Wife | — | California |
| 82 | John E. Lund | 69 | Head | — | Denmark |
| 83 | Wilhelmina Christensen | 57 | Lodger | House-Keeper | Denmark |
| 84 | Alvin Christensen | 27 | Head | Farmer | Massachusetts |
| 85 | Francis H. Christensen | 23 | Wife | — | Massachusetts |
| 86 | Gertrude H. Bird | 56 | Head | Manager | Massachusetts |
| 87 | Charles H. Lund | 45 | Lodger | Chauffeur | Massachusetts |
| 88 | Emma Freeman | 34 | Lodger | Servant | Finland |
| 89 | Charles Aldo | 49 | Head | Laborer | Finland |
| 90 | Elsie Aldo | 46 | Wife | — | Finland |
| 91 | Velma Aldo | 19 | Daughter | Nurse | Massachusetts |
| 92 | Charles Jr. Aldo | 15 | Son | — | Massachusetts |
| 93 | Alfred B. Harris | 40 | Head | Engineer | Massachusetts |
| 94 | Marion A. Harris | 44 | Wife | — | Massachusetts |
| 95 | Gustavus Harris | 20 | Son | Truck Driver | Massachusetts |
| 96 | Frederick A. Harris | 17 | Son | — | Massachusetts |
| 97 | Charles S. Whitney | 65 | Head | Clerk | Massachusetts |
| 98 | Theodora M. Whitney | 60 | Wife | — | Pennsylvania |
| 99 | John Stafford | 62 | Head | Odd-Hand | England |
| 100 | Ellen Stafford | 59 | Wife | — | England |
Pedigree Summary
Carl + 2 siblings
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 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)