JG
John Gray — 1930 US Census Record
Model Tree available1930 United States Federal Census · Union, Iowa
Our Model Tree links this John Gray across the 1920, 1930 and 1940 US Censuses in Union, Iowa (XGBoost, ~Confirmed), with identified parents John & Agnes — first a son (b.~1908), then head of a 5-person household.
Age 22
b. ~1908
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Union, Iowa |
| Surname | Gray |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Assistant Clerk |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Assistant Clerk |
| Township / Ward | Creston City |
| Est. Birth Year | ~1908 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Gray | Daughter | — | 24 | ~1906 |
| John Gray | Head | — | 56 | ~1874 |
| Agnes Gray | Other | — | 55 | ~1875 |
| John Gray | Son | — | 22 | ~1908 |
| James Gray | Son | — | 19 | ~1911 |
Census Appearances
1920
Union, Iowa
Son, age 12
Union, Iowa · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gray |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Union, Iowa
Son, age 22
Union, Iowa · implied b. ~1908 — 5 household members
| Surname | Gray |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Assistant Clerk |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Union-County, Iowa
Head, age 33
Union-County, Iowa · implied b. ~1907 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grey |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Creston City |
| 1935 Residence (County) | Union County |
| Occupation | Counter Clerk |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Gray across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Gray (~0.92 confidence) and mother Agnes Gray (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Gray
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Agnes Gray
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gray
Son · 1930 · age 22 · b. ~1908 · Iowa
★ You are viewing this record
Sibling
Margaret Gray
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Gray
Sibling · 1930 · age 19
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 — Union, Iowa
Open full size
1930 US Federal Census — Union, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel684:0195)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edna G. Clifford | 42 | Wife-H | None | Iowa |
| 52 | Ruth L. Clifford | 13 | Daughter | None | Iowa |
| 53 | Wayne E. Clifford | 11 | Son | None | Iowa |
| 54 | Mettie M. Clifford | 67 | Mother | None | Iowa |
| 55 | Elwood C. Brown | 38 | Head | Conductor | Iowa |
| 56 | Georgia Z. Brown | 38 | Wife-H | None | Iowa |
| 57 | Earl E. Brown | 14 | Son | None | Iowa |
| 58 | John H. Peterson | 39 | Head | Meat Cutter | Iowa |
| 59 | Hallie Peterson | 34 | Wife-H | None | Washington |
| 60 | John J. Peterson | 12 | Son | None | Iowa |
| 61 | Gaeche R. Peterson | 8 | Daughter | None | Iowa |
| 62 | Doreen G. Peterson | 6 | Daughter | None | Iowa |
| 63 | Eric H. Ekblad | 47 | Head | Seminial|Seminole | Sweden |
| 64 | Idella R. Ekblad | 27 | Wife-H | None | Washington |
| 65 | Hallie J. Ekblad | 2 | Daughter | None | Iowa |
| 66 | Joseph L. Spies | 47 | Head | Machinist | Illinois |
| 67 | Gordon E. Smail | 49 | Head | Carpenter | Iowa |
| 68 | Ada A. Smail | 48 | Wife-H | None | Iowa |
| 69 | Charles Ramstetter | 71 | Head | None | Wisconsin |
| 70 | Laura M. Ramstetter | 68 | Wife-H | None | Iowa |
| 71 | George J. Novotne | 47 | Head | Chauffeur | Iowa |
| 72 | Anna J. Novotne | 47 | Wife-H | None | Iowa |
| 73 | Mary A. Novotne | 24 | Daughter | Bookkeeper | Iowa |
| 74 | Annette R. Novotne | 19 | Daughter | None | Iowa |
| 75 | Grace M. Novotne | 12 | Daughter | None | Iowa |
| 76 | Leonard C. Novotne | 11 | Son | None | Iowa |
| 77 | Dorothy A. Novotne | 9 | Daughter | None | Iowa |
| 78 | Harold J. Novotne | 7 | Son | None | Iowa |
| 79 | Harlan W. Curtis | 23 | Head | Assistant Physician | Iowa |
| 80 | Louise V. Curtis | 19 | Wife-H | None | Iowa |
| 81 | Joann L. Curtis | 1 | Daughter | None | Iowa |
| 82 | Addie B. Curtis | 62 | Mother | None | Illinois |
| 83 | John Gray | 56 | Head | Machinist | Scotland |
| 84 | Agnes Gray | 55 | Wife-H | None | Scotland |
| 85 | Margaret Gray | 24 | Daughter | Stenographer | Iowa |
| 86 | John W. Gray THIS PERSON | 22 | Son | Assistant Clerk | Iowa |
| 87 | James R. Gray | 19 | Son | Meat Cutter | Iowa |
| 88 | Earl G. Cline | 31 | Head | Switchman | Iowa |
| 89 | Myrtle Cline | 28 | Wife-H | None | Iowa |
| 90 | Helen L. Cline | 7 | Daughter | None | Iowa |
| 91 | Marie R. Cline | 5 | Daughter | None | Iowa |
| 92 | William R. Walters | 29 | Head | Shoe Cobbler | Iowa |
| 93 | Emma B. Walters | 27 | Wife-H | None | Iowa |
| 94 | Orlando E. Benson | 65 | Head | Laborer | Iowa |
| 95 | Vilenia E. Benson | 62 | Wife-H | None | Pennsylvania |
| 96 | Oscar E. Benson | 37 | Son | Laborer | Iowa |
| 97 | John T. Holt | 41 | Head | Speculating | Nebraska |
| 98 | Bessie Holt | 40 | Wife-H | None | Iowa |
| 99 | Gladys Holt | 18 | Daughter | None | Iowa |
| 100 | Thomas J. Yuska | 74 | Head | Farming | Czechoslovakia |
Pedigree Summary
John + 2 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)