GP
George Pierce — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this George Pierce across the 1920, 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed), with identified parents Fred & Ival — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Pierce |
| Given Name | George |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Occupation | Laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 216 |
| Highest Grade | No 7 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Douglas Twp |
| Est. Birth Year | ~1919 |
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 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| Ival Pierce | Head | — | 53 | ~1887 |
| Mae Pierce | Spouse | — | 50 | ~1890 |
| Harold Pierce | Son | — | 22 | ~1918 |
| George Pierce | Son | — | 21 | ~1919 |
| Dale Pierce | Son | — | 19 | ~1921 |
Census Appearances
1920
Boone, Iowa
Son, age 1
Boone, Iowa · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pierce |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Boone, Iowa
Son, age 11
Boone, Iowa · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pierce |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Boone-County, Iowa
Son, age 21
Boone-County, Iowa · implied b. ~1919 — 5 household members
| Surname | Pierce |
| Given Name | George |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Cass |
| Occupation | Laborer |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 216 |
| Highest Grade | No 7 |
| 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 George Pierce across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Pierce (~0.92 confidence) and father Ival Pierce (~0.92 confidence) and mother Lillian Pierce (~0.92 confidence) and mother Mae Pierce (~0.92 confidence) and mother Mary Pierce (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Pierce
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Ival Pierce
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Lillian Pierce
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mae Pierce
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Pierce
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
George Pierce
Son · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Sibling
Dale Pierce
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Pierce
Sibling · 1940 · age 22
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
1940 US Federal Census — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00637)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Linda Williams | 63 | Sister in law | — | Iowa |
| 2 | Amy Williams | 82 | Head | — | Iowa |
| 3 | Paul Williams | 46 | Head | Operator | Iowa |
| 4 | Millie Williams | 41 | wife | — | Iowa |
| 5 | Ray Smith | 48 | Head | Operator | Illinois |
| 6 | Anna Smith | 36 | wife | — | Iowa |
| 7 | Dean M Smith | 2 | son | — | Iowa |
| 8 | Francis M Welder | 53 | Head | Operator | Iowa |
| 9 | Goldie Q Welder | 41 | wife | — | Iowa |
| 10 | Marion Welder | 17 | daughter | — | Iowa |
| 11 | Francis Jr Welder | 14 | son | — | Iowa |
| 12 | Virgil Welder | 8 | son | — | Iowa |
| 13 | J. A. Baird | 59 | Head | Operator | Iowa |
| 14 | Sara Baird | 59 | wife | — | Iowa |
| 15 | Claude E Prewett | 48 | Head | Operator | Missouri |
| 16 | Cecil Prewett | 34 | wife | — | Iowa |
| 17 | William Mills | 55 | Head | Operator | Iowa |
| 18 | Rose Mills | 55 | wife | — | Iowa |
| 19 | Frank J Mills | 25 | son | Laborer | Iowa |
| 20 | Ralph Carroll | 47 | Head | Operator | Iowa |
| 21 | Grace Carroll | 47 | wife | — | Iowa |
| 22 | Billie Carroll | 14 | son | — | Iowa |
| 23 | Helen Carroll | 12 | daughter | — | Iowa |
| 24 | Bert Gibson | 60 | Lodger | — | Penns. |
| 25 | John Hall | 45 | Head | Operator | Iowa |
| 26 | Mae Hall | 40 | wife | — | Iowa |
| 27 | Elray Hall | 8 | Grandson | — | Iowa |
| 28 | Ival Pierce | 53 | Head | Operator | Iowa |
| 29 | Mae Pierce | 50 | wife | — | Iowa |
| 30 | Harold Pierce | 22 | son | Laborer | Iowa |
| 31 | George Pierce THIS PERSON | 21 | son | Laborer | Iowa |
| 32 | Dale Pierce | 19 | son | Laborer | Iowa |
| 33 | W. C. Danielson | 44 | Head | Operator | Iowa |
| 34 | Frances Danielson | 32 | wife | — | Iowa |
| 35 | Virgil L Danielson | 12 | son | — | Iowa |
| 36 | James H Danielson | 10 | son | — | Iowa |
| 37 | Donald D Danielson | 9 | son | — | Iowa |
| 38 | Wilma M Danielson | 1 | daughter | — | Iowa |
| 39 | Dewey Wisecup | 41 | Head | Farm Laborer | Iowa |
| 40 | Valda Wisecup | 37 | wife | — | Iowa |
Pedigree Summary
George + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)