JG
John Grace — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Douglas, Nebraska
Our Model Tree links this John Grace across the 1930 and 1940 US Censuses in Douglas, Nebraska (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 9-person household.
Age 12
b. ~1918
Male
Son
Born: Nebraska
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Douglas, Nebraska |
| Surname | Grace |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Omaha |
| Est. Birth Year | ~1918 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Helen Grace | Daughter | — | 22 | ~1908 |
| Robert Grace | Son | — | 10 | ~1920 |
| Anna Grace | Spouse | — | 52 | ~1878 |
| Dorothy Grace | Daughter | — | 14 | ~1916 |
| Ruth Grace | Daughter | — | 18 | ~1912 |
| Esther Grace | Daughter | — | 16 | ~1914 |
| Alice Grace | Daughter | — | 20 | ~1910 |
| John Grace | Son | — | 12 | ~1918 |
| James Grace | Head | — | 52 | ~1878 |
Census Appearances
1930
Douglas, Nebraska
Son, age 12
Douglas, Nebraska · implied b. ~1918 — 9 household members
| Surname | Grace |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Douglas-County, Nebraska
Son, age 22
Douglas-County, Nebraska · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gracias |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Nebraska |
| 1935 Residence (City) | Omaha |
| 1935 Residence (County) | Douglas |
| Occupation | Laborer |
| Industry | Brewery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1420 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Grace across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Grace
Son · 1930 · age 12 · b. ~1918 · Nebraska
★ You are viewing this record
Sibling
Alice Grace
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Grace
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Grace
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Grace
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Grace
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Grace
Sibling · 1930 · age 14
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 — Douglas, Nebraska
Open full size
1930 US Federal Census — Douglas, Nebraska
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1276unit:0685)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Oscar Lund | 42 | Head | Saleslady | Iowa |
| 2 | Dora Lund | 42 | Wife | Glover | Nebraska |
| 3 | Lester Lund | 14 | Son | Messenger | Nebraska |
| 4 | Marie Lund | 12 | Daughter | Saleslady | Nebraska |
| 5 | Lillian Lund | 10 | Daughter | — | Nebraska |
| 6 | Lucille Lund | 8 | Daughter | — | Nebraska |
| 7 | Isaac Barnett | 43 | Head | Locomotive Engineer | Missouri |
| 8 | Hulda Barnett | 42 | Wife | — | Sweden |
| 9 | Lester Barnett | 19 | Son | — | Nebraska |
| 10 | Evelyn Barnett | 17 | Daughter | — | Nebraska |
| 11 | Robert Barnett | 15 | Son | Laborer | Nebraska |
| 12 | John Lota | 26 | Head | Beauty Specialist | Nebraska |
| 13 | Gladys Lota | 24 | Wife | — | Nebraska |
| 14 | John Jr Lota | 1 | Son | — | Nebraska |
| 15 | Alfred Schoenman | 31 | Head | Clock Maker | Germany |
| 16 | Marie Schoenman | 25 | Wife | Watch Maker | Germany |
| 17 | Alfred Jr Schoenman | 6 | Son | — | Nebraska |
| 18 | Richard Schoenman | 4 | Son | — | Nebraska |
| 19 | Robert Schoenman | 2 | Son | — | Iowa |
| 20 | William Schoenman | 1 | Son | — | Nebraska |
| 21 | John Schoenman | 0 | Son | — | Nebraska |
| 22 | Joseph Schoenman | 0 | Son | — | Nebraska |
| 23 | Joseph Mcmeekin | 45 | Head | Proprietor | Northern Ireland |
| 24 | Sarah Mcmeekin | 42 | Wife | — | Northern Ireland |
| 25 | William Grace | 22 | Head | Meat Cutter | Ohio |
| 26 | Ruth Grace | 22 | Wife | — | Ohio |
| 27 | William Jr Grace | 0 | Son | — | Ohio |
| 28 | Mary Grace | 0 | Daughter | — | Ohio |
| 29 | John Grace | 0 | Son | — | Ohio |
| 30 | James Grace | 52 | Head | Operator | Denmark |
| 31 | Anna Grace | 52 | Wife | — | Denmark |
| 32 | Helen Grace | 22 | Daughter | — | Nebraska |
| 33 | Alice Grace | 20 | Daughter | Teacher | Nebraska |
| 34 | Ruth Grace | 18 | Daughter | — | Nebraska |
| 35 | Esther Grace | 16 | Daughter | — | Nebraska |
| 36 | Dorothy Grace | 14 | Daughter | — | Nebraska |
| 37 | John Grace THIS PERSON | 12 | Son | — | Nebraska |
| 38 | Robert Grace | 10 | Son | — | Nebraska |
| 39 | James Sarnam | 45 | Head | — | Italy |
| 40 | Mary Sarnam | 40 | Wife | — | Italy |
| 41 | Joseph Sarnam | 17 | Son | Salesman | Nebraska |
| 42 | Rose Sarnam | 15 | Daughter | Salesman | Nebraska |
| 43 | Frank Sarnam | 13 | Son | — | Nebraska |
| 44 | James Jr Sarnam | 11 | Son | — | Nebraska |
| 45 | John Sarnam | 9 | Son | — | Nebraska |
| 46 | Mary Sarnam | 7 | Daughter | — | Nebraska |
| 47 | Anthony Sarnam | 5 | Son | — | Nebraska |
| 48 | Lucille Sarnam | 3 | Daughter | — | Nebraska |
| 49 | Robert Sarnam | 1 | Son | — | Nebraska |
| 50 | Frank Justin | 42 | Head | Filing Clerk | Nebraska |
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)