MJ
Mary Jenkins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Bannock-County, Idaho
Our Model Tree links this Mary Jenkins across the 1920, 1930 and 1940 US Censuses in Bannock-County, Idaho (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Female
Daughter
Born: Idaho
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bannock-County, Idaho |
| Surname | Jenkins |
| Given Name | Mary B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Robin - Rural |
| 1935 Residence (County) | Bannock |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Robin Rural |
| Est. Birth Year | ~1911 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jenkins | Daughter | — | 29 | ~1911 |
| Shirley Jenkins | Daughter | — | 13 | ~1927 |
| William Jenkins | Head | — | 67 | ~1873 |
| Dale Jenkins | Son | — | 18 | ~1922 |
| Willie Jenkins | Son | — | 20 | ~1920 |
| Mary Jenkins | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Bannock, Idaho
Daughter, age 10
Bannock, Idaho · implied b. ~1910 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Bannock, Idaho
Daughter, age 20
Bannock, Idaho · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jenkins |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Can Read/Write | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1940
Bannock-County, Idaho
Daughter, age 29
Bannock-County, Idaho · implied b. ~1911 — 6 household members
| Surname | Jenkins |
| Given Name | Mary B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Idaho |
| 1935 Residence (City) | Robin - Rural |
| 1935 Residence (County) | Bannock |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 Mary 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 father William Jenkins (~0.92 confidence) and mother Mary Jenkins (~0.92 confidence) and mother Mary Jenkins (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Jenkins
b. ~1873
Source father
● Household
· direct · ~0.92
Father
William Jenkins
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Jenkins
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mary Jenkins
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Jenkins
Daughter · 1940 · age 29 · b. ~1911 · Idaho
★ You are viewing this record
Sibling
Dale Jenkins
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Jenkins
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Jenkins
Sibling · 1940 · age 20
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 — Bannock-County, Idaho
Open full size
1940 US Federal Census — Bannock-County, Idaho
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00737-01150)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J. Evans | 77 | Head | Manager | Iowa |
| 2 | Hazel Ragan | 45 | Nephew | Barber | Iowa |
| 3 | Ina Ragan | 46 | Niece | — | Iowa |
| 4 | Harry Ragan | 22 | Great Nephew | — | Iowa |
| 5 | Freeland Q. Evans | 60 | Head | Manager | Iowa |
| 6 | Willie H. Evans | 19 | Nephew | — | Idaho |
| 7 | Helen J. Olsen | 35 | Head | Manager | Idaho |
| 8 | Blanche A. Olsen | 32 | Wife | — | Idaho |
| 9 | Earl D. Olsen | 8 | Son | — | Idaho |
| 10 | Virginia D. Olsen | 6 | Daughter | — | Idaho |
| 11 | Barbara Olsen | 3 | Daughter | — | Idaho |
| 12 | Beverly Olsen | 1 | Daughter | — | Idaho |
| 13 | Price S. Armstrong | 47 | Head | Manager | Virginia |
| 14 | Rebecca Armstrong | 46 | Wife | — | Utah |
| 15 | Dale E. Armstrong | 18 | Son | — | Idaho |
| 16 | Evelyn Armstrong | 16 | Daughter | — | Idaho |
| 17 | Ray Armstrong | 10 | Son | — | Idaho |
| 18 | Cecil Armstrong | 8 | Son | — | Idaho |
| 19 | J. Frank Hulse | 55 | Head | Manager | Kansas |
| 20 | Rula Hulse | 47 | Wife | — | Virginia |
| 21 | George W. Black | 65 | Head | Manager | Utah |
| 22 | Samuel S. Giles | 48 | Head | Manager | Virginia |
| 23 | Goldie Giles | 42 | Wife | — | Virginia |
| 24 | Maurice Giles | 19 | Son | — | Idaho |
| 25 | Helen Giles | 17 | Daughter | — | Idaho |
| 26 | Vera Giles | 10 | Daughter | — | Idaho |
| 27 | Beverly Giles | 5 | Daughter | — | Idaho |
| 28 | William Jenkins | 67 | Head | Manager | Utah |
| 29 | Mary A. Jenkins | 57 | Wife | — | Utah |
| 30 | Mary B. Jenkins THIS PERSON | 29 | Daughter | — | Idaho |
| 31 | Shirley Jenkins | 13 | Daughter | — | Idaho |
| 32 | Willie Jenkins | 20 | Son | — | Idaho |
| 33 | Dale Jenkins | 18 | Son | — | Idaho |
| 34 | Henry W. Jenkins | 36 | Head | Manager | Idaho |
| 35 | Erma Jenkins | 29 | Wife | — | Idaho |
| 36 | Rula L. Jenkins | 10 | Daughter | — | Idaho |
| 37 | Corinne Jenkins | 4 | Daughter | — | Idaho |
| 38 | Eli A. Blanchard | 54 | Head | Manager | Utah |
| 39 | Anne S. Blanchard | 44 | Wife | — | Idaho |
| 40 | Lamar Blanchard | 18 | Son | — | Idaho |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 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)