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James Jacobs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knott-County, Kentucky
Our Model Tree links this James Jacobs across the 1930 and 1940 US Censuses in Knott-County, Kentucky (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knott-County, Kentucky |
| Surname | Jacobs |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Pippapass Kentucky |
| 1935 Residence (County) | Knott |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Pippapass Kentucky |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ben Jacobs | Head | — | 42 | ~1898 |
| Joseph Jacobs | Son | — | 8 | ~1932 |
| Dora Jacobs | Spouse | — | 38 | ~1902 |
| James Jacobs | Son | — | 15 | ~1925 |
| Hillard Jacobs | Son | — | 18 | ~1922 |
| Mornie Jacobs | Daughter | — | 10 | ~1930 |
| Lorna Jacobs | Daughter | — | 6 | ~1934 |
| Eunice Jacobs | Daughter | — | 12 | ~1928 |
| Junior Jacobs | Son | — | 14 | ~1926 |
Census Appearances
1930
Knott, Kentucky
Son, age 6
Knott, Kentucky · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Knott-County, Kentucky
Son, age 15
Knott-County, Kentucky · implied b. ~1925 — 9 household members
| Surname | Jacobs |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Pippapass Kentucky |
| 1935 Residence (County) | Knott |
| Class of Worker | 0 |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 James Jacobs across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Jacobs
Son · 1940 · age 15 · b. ~1925 · Kentucky
★ You are viewing this record
Sibling
Mornie Jacobs
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorna Jacobs
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eunice Jacobs
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Jacobs
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hillard Jacobs
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junior Jacobs
Sibling · 1940 · age 14
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 — Knott-County, Kentucky
Open full size
1940 US Federal Census — Knott-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01326-00429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bayless Jacobs | 12 | Son | — | Kentucky |
| 2 | Cleveland Jacobs | 11 | Son | — | Kentucky |
| 3 | Vernon Jacobs | 8 | Son | — | Kentucky |
| 4 | Anita Jacobs | 3 | Daughter | — | Kentucky |
| 5 | Ben Jacobs | 42 | Head | Working Road | Kentucky |
| 6 | Dora Jacobs | 38 | Wife | — | Kentucky |
| 7 | Hillard Jacobs | 18 | Son | Farming | Kentucky |
| 8 | James Jacobs THIS PERSON | 15 | Son | — | Kentucky |
| 9 | Junior Jacobs | 14 | Son | — | Kentucky |
| 10 | Eunice Jacobs | 12 | Daughter | — | Kentucky |
| 11 | Mornie Jacobs | 10 | Daughter | — | Kentucky |
| 12 | Joseph Jacobs | 8 | Son | — | Kentucky |
| 13 | Lorna Jacobs | 6 | Daughter | — | Kentucky |
| 14 | Hilson Jacobs | 21 | Head | Farming | Kentucky |
| 15 | Sally Jacobs | 20 | Wife | — | Kentucky |
| 16 | Dora Jacobs | 1 | Daughter | — | Kentucky |
| 17 | Elba Jacobs | 20 | Head | Farming | Kentucky |
| 18 | Havana Jacobs | 19 | Wife | — | Kentucky |
| 19 | Nola Jacobs | 4 | Daughter | — | Kentucky |
| 20 | Steve Jacobs | 2 | Son | — | Kentucky |
| 21 | Mary Johnson | 66 | Head | — | Kentucky |
| 22 | Elijah Johnson | 33 | Son | Carrying Coal For School | Kentucky |
| 23 | Lee Johnson | 20 | Son | — | Kentucky |
| 24 | Clarence Johnson | 16 | Grandson | — | Kentucky |
| 25 | Bessie Johnson | 14 | Granddaughter | — | Kentucky |
| 26 | Harrison Slone | 72 | Head | — | Kentucky |
| 27 | Billy Jacobs | 68 | Head | — | Kentucky |
| 28 | Sylvania Jacobs | 62 | Wife | — | Kentucky |
| 29 | Grover Huff | 54 | Head | Miner | Kentucky |
| 30 | Viola Huff | 52 | Wife | — | Kentucky |
| 31 | Hency Huff | 22 | Daughter | — | Kentucky |
| 32 | Flosie Huff | 18 | Daughter | — | Kentucky |
| 33 | Bruce Huff | 16 | Son | — | Kentucky |
| 34 | Sydna Huff | 12 | Daughter | — | Kentucky |
| 35 | Tom Jacobs | 48 | Head | Miner | Kentucky |
| 36 | Connie Jacobs | 37 | Wife | — | Kentucky |
| 37 | Willie Jacobs | 17 | Son | Farming | Kentucky |
| 38 | Lawson Jacobs | 16 | Son | Farming | Kentucky |
| 39 | Buck Jacobs | 15 | Son | Farming | Kentucky |
| 40 | Auston Jacobs | 12 | Son | Farming | Kentucky |
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)