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Harold Nelson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Harold Nelson across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Nicholas & Anna — first a son (b.~1912), then head of a 8-person household.
Age 18
b. ~1912
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Nelson |
| Given Name | Harold E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Apprentice |
| Industry | Photography |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Apprentice |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1912 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Ruth Nelson | Daughter | — | 8 | ~1922 |
| Ethel Nelson | Daughter | — | 22 | ~1908 |
| Nicholas Nelson | Head | — | 49 | ~1881 |
| Sophia Nordquist | Other | — | 74 | ~1856 |
| Anna Nelson | Other | — | 43 | ~1887 |
| Harold Nelson | Son | — | 18 | ~1912 |
| Robert Nelson | Son | — | 15 | ~1915 |
| Le Nelson | Son | — | 10 | ~1920 |
Census Appearances
1920
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 18
Cook, Illinois · implied b. ~1912 — 8 household members
| Surname | Nelson |
| Given Name | Harold E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Apprentice |
| Industry | Photography |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Other, age 29
Cook-County, Illinois · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nielsen |
| Given Name | Harold |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Occupation | Carpenter |
| Industry | Trailer Mfg. |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 910 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Nicholas Nelson (~0.92 confidence) and mother Anna Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nicholas Nelson
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Anna Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Nelson
Son · 1930 · age 18 · b. ~1912 · Illinois
★ You are viewing this record
Sibling
Ethel Nelson
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Nelson
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Le Nelson
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Nelson
Sibling · 1930 · age 8
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel480:0771)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl Wagner | 45 | Head | Chauffeur | Austria Vienna |
| 2 | Wally Wagner | 45 | Wife-H | — | Germany Munich |
| 3 | Emil Wagner | 10 | Son | — | Illinois |
| 4 | Paul Berthold | 48 | Boarder | Laborer | Germany Saxony |
| 5 | Hans P Stausen | 63 | Head | Machinist | Norway |
| 6 | Mary H Stausen | 61 | Wife-H | — | Norway |
| 7 | Esther Stausen | 33 | Daughter | General Office Work | Illinois |
| 8 | Henry J Stausen | 31 | Son | Chauffeur | Illinois |
| 9 | Earl A Stausen | 22 | Son | Accounting | Illinois |
| 10 | Carl Lang | 41 | Head | Plumber | Germany Bavaria |
| 11 | Martha Lang | 41 | Wife-H | — | Illinois |
| 12 | Martin H Dovoker | 22 | Step son | Grocery Clerk | Illinois |
| 13 | Gertrude Dovoker | 19 | Step daughter | Telephone Operator | Illinois |
| 14 | Mildred B Lang | 10 | Daughter | — | Illinois |
| 15 | Carl H Jr Lang | 8 | Son | — | Illinois |
| 16 | Earl T Lang | 7 | Son | — | Illinois |
| 17 | Harold G Lang | 5 | Son | — | Illinois |
| 18 | Robert B Lang | 2 | Son | — | Illinois |
| 19 | John A Leisner | 55 | Head | Cook | Denmark |
| 20 | Pearl S Leisner | 49 | Wife-H | — | Iowa |
| 21 | Fay E Leisner | 21 | Daughter | Filing Clerk | Illinois |
| 22 | John W Leisner | 19 | Son | Newspaper Distributor | Illinois |
| 23 | Virginia A Leisner | 16 | Daughter | Soda Clerk | Illinois |
| 24 | Eleanor M Leisner | 11 | Daughter | — | Illinois |
| 25 | Robert Ricklefs | 33 | Lodger | Salesman | Illinois |
| 26 | Robert Jr Ricklefs | 6 | Boarder | — | Illinois |
| 27 | Audrey Ricklefs | 3 | Boarder | — | Illinois |
| 28 | Edward V Burger | 37 | Head | Factory Department | Minnesota |
| 29 | Ema A Burger | 30 | Wife-H | — | Illinois |
| 30 | Marion J Burger | 7 | Daughter | — | Illinois |
| 31 | Frank M Burger | 35 | Brother | Machinist | Wisconsin |
| 32 | John W Drew | 30 | Head | Carpenter | Ohio |
| 33 | Esther B Drew | 24 | Wife-H | — | Sweden |
| 34 | John D Drew | 2 | Son | — | Illinois |
| 35 | Walter W Luetking | 29 | Head | Shipping Clerk | Illinois |
| 36 | Daisy M Luetking | 27 | Wife-H | — | Illinois |
| 37 | La Verne J Luetking | 4 | Daughter | — | Illinois |
| 38 | Marion J Luetking | 2 | Daughter | — | Illinois |
| 39 | William J Person | 35 | Head | Repairman | New York |
| 40 | Alice A Person | 30 | Wife-H | — | Illinois |
| 41 | Beulah R Person | 7 | Daughter | — | Illinois |
| 42 | Geraldine M Person | 2 | Daughter | — | Illinois |
| 43 | Nicholas Nelson | 49 | Head | Milk Salesman | Sweden |
| 44 | Anna S Nelson | 43 | Wife-H | — | Illinois |
| 45 | Ethel S Nelson | 22 | Daughter | Bookkeeper | Illinois |
| 46 | Harold E Nelson THIS PERSON | 18 | Son | Apprentice | Illinois |
| 47 | Robert J Nelson | 15 | Son | — | Illinois |
| 48 | Le Roy K Nelson | 10 | Son | — | Illinois |
| 49 | Ruth M Nelson | 8 | Daughter | — | Illinois |
| 50 | Sophia Nordquist | 74 | Mother-law | — | Sweden |
Pedigree Summary
Harold + 4 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)