JG
John Giles — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Polk, Iowa
Our Model Tree links this John Giles across the 1930 and 1940 US Censuses in Polk, Iowa (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 6-person household.
Age 13
b. ~1917
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Giles |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines Iowa |
| Est. Birth Year | ~1917 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Lana Giles | Daughter | — | 6 | ~1924 |
| John Giles | Son | — | 13 | ~1917 |
| Mary Giles | Other | — | 35 | ~1895 |
| Frank Giles | Head | — | 39 | ~1891 |
| Bill Giles | Son | — | 9 | ~1921 |
| Ben Giles | Son | — | 11 | ~1919 |
Census Appearances
1930
Polk, Iowa
Son, age 13
Polk, Iowa · implied b. ~1917 — 6 household members
| Surname | Giles |
| Given Name | John W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Other, age 23
Polk-County, Iowa · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gillis |
| Given Name | John |
| Relationship to Head | Nephew |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ottumwa |
| 1935 Residence (County) | Wapello |
| Occupation | Printer |
| Industry | Standard Printing Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 310 |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| 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 Giles across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Giles
Son · 1930 · age 13 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Bill Giles
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lana Giles
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ben Giles
Sibling · 1930 · age 11
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 — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
48 people indexed on this census page (ia:1930:iowacensus00reel673:1049)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Martin S Olsen | 52 | Head | Physician | Illinois |
| 2 | Margaret A Olsen | 15 | Daughter | — | Wisconsin |
| 3 | Anna M Olsen | 45 | Sister-H | Teacher | Illinois |
| 4 | Gladys L Larson | 19 | Servant | Servant | Iowa |
| 5 | Frank A Giles | 39 | Head | Retail Salesman | Iowa |
| 6 | Mary H Giles | 35 | Wife-H | — | Iowa |
| 7 | John W Giles THIS PERSON | 13 | Son | — | Iowa |
| 8 | Ben F Giles | 11 | Son | — | Iowa |
| 9 | Bill S Giles | 9 | Son | — | Nebraska |
| 10 | Lana A Giles | 6 | Daughter | — | Iowa |
| 11 | Arthur K Jones | 26 | Head | Dealer | Wisconsin |
| 12 | Alice M Jones | 25 | Wife-H | — | Iowa |
| 13 | H Jesse Miller | 64 | Head | Proprietor | Indiana |
| 14 | Celia A Miller | 64 | Wife-H | — | Iowa |
| 15 | Fred C Robinson | 42 | Head | Druggist | Nebraska |
| 16 | Edna C Robinson | 65 | Mother-H | — | Illinois |
| 17 | Gertrude S Robinson | 35 | Sister | Clerk | Iowa |
| 18 | Harry S Davidson | 33 | Head | Proprietor | Missouri |
| 19 | Bessie S Davidson | 37 | Wife-H | — | Connecticut |
| 20 | Louise E Davidson | 13 | Daughter | — | Iowa |
| 21 | Florence G Davidson | 8 | Daughter | — | Iowa |
| 22 | Marvin M Davidson | 6 | Son | — | Iowa |
| 23 | Maxine R Davidson | 1 | Daughter | — | Iowa |
| 24 | Genevieve Butler | 17 | Servant | Servant | Iowa |
| 25 | Carl H Gardner | 40 | Head | Postal Clerk | Iowa |
| 26 | Amy B Gardner | 41 | Wife-H | — | Iowa |
| 27 | Shirley R Gardner | 11 | Daughter | — | Iowa |
| 28 | Beverly Gardner | 4 | Daughter | — | Iowa |
| 29 | Phyllis Gardner | 4 | Daughter | — | Iowa |
| 30 | Annie L Truman | 56 | Head-H | Piano Teacher | Iowa |
| 31 | W Edward Truman | 14 | Son | — | Iowa |
| 34 | Thomas E Sterrett | 54 | Head | Carpenter | Iowa |
| 35 | Chloe L Sterrett | 40 | Wife-H | — | Iowa |
| 36 | Howard Sterrett | 16 | Son | — | Iowa |
| 37 | Dorothy L Sterrett | 14 | Daughter | — | Iowa |
| 38 | Lyle F Sterrett | 9 | Son | — | Iowa |
| 39 | William J Souder | 70 | Head | Manager | Ohio |
| 40 | Ida M Souder | 64 | Wife-H | — | Iowa |
| 41 | D Harmon Daniels | 64 | Head | Custodian | Iowa |
| 42 | Mary E Daniels | 55 | Wife-H | — | Missouri |
| 43 | Margaret E Daniels | 16 | Daughter | — | Missouri |
| 44 | Cora M Horn | 51 | Head | Clerk | Ohio |
| 45 | Jennie J Wright | 60 | Lodger | — | Ohio |
| 46 | Harry R Davis | 50 | Head | Conductor | Iowa |
| 47 | Blanche Davis | 46 | Wife-H | — | Iowa |
| 48 | Margaret L Chase | 84 | Head | — | New York |
| 49 | George W Hull | 69 | Head | Proprietor | Pennsylvania |
| 50 | Sue R Hull | 51 | Wife-H | — | Iowa |
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)