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Frank Jenkins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Iowa
Our Model Tree links this Frank Jenkins across the 1920, 1930 and 1940 US Censuses in Marion-County, Iowa (XGBoost, ~Confirmed), with identified parents William & Mattie — first a head (b.~1897), then head of a 8-person household.
Age 43
b. ~1897
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Iowa |
| Surname | JENKINS |
| Given Name | FRANK F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville Twp |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | operator |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 75 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Operator |
| Township / Ward | Knoxville Twp |
| Est. Birth Year | ~1897 |
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 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| John Jenkins | Son | — | 8 | ~1932 |
| Lois Jenkins | Spouse | — | 37 | ~1903 |
| Mary Jenkins | Daughter | — | 19 | ~1921 |
| Frank Jenkins | Head | — | 43 | ~1897 |
| Frances Jenkins | Daughter | — | 15 | ~1925 |
| Frank Jenkins | Son | — | 5 | ~1935 |
| Jeanne Jenkins | Daughter | — | 12 | ~1928 |
| William Jenkins | Son | — | 15 | ~1925 |
Census Appearances
1920
Marion, Iowa
Son, age 23
Marion, Iowa · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Frank G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Partner |
| Industry | Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Marion, Iowa
Head, age 33
Marion, Iowa · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Frank F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 23 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marion-County, Iowa
Head, age 43
Marion-County, Iowa · implied b. ~1897 — 8 household members
| Surname | JENKINS |
| Given Name | FRANK F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Knoxville Twp |
| 1935 Residence (County) | Marion |
| Occupation | operator |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 75 |
| Income (1939) | 0 |
| Highest Grade | H 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 Frank Jenkins across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Jenkins (~0.92 confidence) and mother Mattie Jenkins (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Jenkins
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Mattie Jenkins
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Jenkins
Head · 1940 · age 43 · b. ~1897 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Iowa
Open full size
1940 US Federal Census — Marion-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01181-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leroy Hays | 64 | Head | Operator | Iowa |
| 2 | Nora I Hays | 64 | Wife | — | Iowa |
| 3 | Kenneth E Rowland | 9 | Grandson | — | Iowa |
| 4 | Lloyd D Wright | 20 | Head | Hired Hand | Iowa |
| 5 | Hazel P Wright | 18 | Wife | — | Iowa |
| 6 | Theo Loa Bull | 46 | Head | Operator | Iowa |
| 7 | Elva Bull | 45 | Wife | — | Iowa |
| 8 | Mary Helen Bull | 20 | Daughter | Clerk | Iowa |
| 9 | Reid Bull | 17 | Son | — | Iowa |
| 10 | Carl Hixson | 26 | HIRED HAND | Hired Hand | Iowa |
| 11 | Frank F Jenkins THIS PERSON | 43 | Head | Operator | Iowa |
| 12 | Lois V Jenkins | 37 | Wife | — | Iowa |
| 13 | Mary V Jenkins | 19 | Daughter | Teacher | Iowa |
| 14 | William O Jenkins | 15 | Son | Operator | Iowa |
| 15 | Frances M Jenkins | 15 | Daughter | — | Iowa |
| 16 | Jeanne J Jenkins | 12 | Daughter | — | Iowa |
| 17 | John J Jenkins | 8 | Son | — | Iowa |
| 18 | Frank F Jr Jenkins | 5 | Son | — | Iowa |
| 19 | Chester A Ross | 55 | Head | Operator Of Farm | Iowa |
| 20 | Orinda M Ross | 66 | SISTER | — | Iowa |
| 21 | Carl Mcconaughey | 54 | Head | Operator Of Farm | Iowa |
| 22 | Lottie Mcconaughey | 63 | SISTER | — | Iowa |
| 23 | William Luther | 65 | Head | Operator | Iowa |
| 24 | Kenneth Adams | 42 | Head | Operator | Iowa |
| 25 | Bessie Adams | 44 | WIFE | — | Iowa |
| 26 | Helen Adams | 19 | Daughter | — | Iowa |
| 27 | Mary M Huffman | 67 | HEAD | Operator Of Farm | Iowa |
| 28 | Minnie W Gaston | 55 | HOUSE KEEPER | House Keep | Iowa |
| 29 | Will M Wilson | 54 | HEAD | Hired Hand | Iowa |
| 30 | Bertha Wilson | 56 | WIFE | — | Iowa |
| 31 | Scott Wilson | 23 | SON | Off Bearer | Iowa |
| 32 | Wayne Wilson | 18 | SON | — | Iowa |
| 33 | Leona M Huffman | 53 | HEAD | Farm Operator | Illinois |
| 34 | John S Huffman | 14 | SON | — | Iowa |
| 35 | Charles M Robinson | 52 | HEAD | Operator | Iowa |
| 36 | Dora Ellen Robinson | 47 | WIFE | — | Iowa |
| 37 | Willis A Robinson | 24 | SON | Hired Hand | Iowa |
| 38 | Wendall D Robinson | 10 | SON | — | Iowa |
| 39 | Robert N Chambers | 57 | HEAD | Operator | Iowa |
| 40 | Edith Chambers | 52 | WIFE | — | Iowa |
Pedigree Summary
Frank
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 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)