HN
Harold Nelson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Mckenzie, North Dakota
Our Model Tree links this Harold Nelson across the 1920, 1930 and 1940 US Censuses in Mckenzie, North Dakota (XGBoost, ~Confirmed), with identified parents Otto & Lillie — first a son (b.~1920), then head of a 6-person household.
Age 10
b. ~1920
Male
Son
Born: North Dakota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Mckenzie, North Dakota |
| Surname | Nelson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | South Dakota |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Wilbur Township Parts Of T 153 Rs 100 101 102 And Part Of T 154 R 101 |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Otto Nelson | Head | — | 46 | ~1884 |
| Lillie Nelson | Other | — | 38 | ~1892 |
| Harry Nelson | Son | — | 12 | ~1918 |
| Frank Nelson | Son | — | 13 | ~1917 |
| Harold Nelson | Son | — | 10 | ~1920 |
| Fred Nelson | Son | — | 15 | ~1915 |
Census Appearances
1920
Mckenzie, North …
Son, age
Mckenzie, North Dakota · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Harold A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mckenzie, North …
Son, age 10
Mckenzie, North Dakota · implied b. ~1920 — 6 household members
| Surname | Nelson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mckenzie-County, North …
Son, age 20
Mckenzie-County, North Dakota · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Harald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Wilbur Twp |
| 1935 Residence (County) | McKenzie |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 52 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Harold Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Otto Nelson (~0.92 confidence) and mother Lillie Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Otto Nelson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Lillie Nelson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Nelson
Son · 1930 · age 10 · b. ~1920 · North Dakota
★ You are viewing this record
Sibling
Harry Nelson
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Nelson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Nelson
Sibling · 1930 · age 13
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 — Mckenzie, North Dakota
Open full size
1930 US Federal Census — Mckenzie, North Dakota
Page Contents
14 people indexed on this census page (ia:1930:15thcensus1738unit:0195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Martin Markuson | 58 | Head | Farmer | Minnesota |
| 52 | Lydia E. Markuson | 45 | Wife-H | None | West Virginia |
| 53 | Kenneth Markuson | 19 | Son | Laborer | North Dakota |
| 54 | Edna M. Markuson | 17 | Daughter | None | North Dakota |
| 55 | Joseph B. Markuson | 16 | Son | Laborer | North Dakota |
| 56 | Edith L. Markuson | 14 | Daughter | None | North Dakota |
| 57 | Cordelia Markuson | 12 | Daughter | None | North Dakota |
| 58 | Viola G. Markuson | 12 | Daughter | None | North Dakota |
| 59 | Otto A. Nelson | 46 | Head | Farmer | Denmark |
| 60 | Lillie M. Nelson | 38 | Wife-H | None | South Dakota |
| 61 | Fred A. Nelson | 15 | Son | Laborer | North Dakota |
| 62 | Frank J. Nelson | 13 | Son | None | North Dakota |
| 63 | Harry C. Nelson | 12 | Son | None | North Dakota |
| 64 | Harold Nelson THIS PERSON | 10 | Son | None | North Dakota |
Related Census Records
Pedigree Summary
Harold + 3 siblings
Gen 1 · 2 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)