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James Kirby — 1940 US Census Record
Model Tree available1940 United States Federal Census · Knox-County, Tennessee
Our Model Tree links this James Kirby across the 1920, 1930 and 1940 US Censuses in Knox-County, Tennessee (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Head
Born: Tennessee
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Tennessee |
| Surname | Kirby |
| Given Name | James C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Swir |
| 1935 Residence (County) | Sevier |
| Additional Details | |
| Occupation | Laborer |
| Industry | Building Industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | No 8 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Occupation | Laborer |
| Township / Ward | Knoxville |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Kirby | Head | — | 27 | ~1913 |
| Nell Kirby | Spouse | — | 30 | ~1910 |
| Billy Kirby | Son | — | 1 | ~1939 |
| James Kirby | Son | — | 3 | ~1937 |
Census Appearances
1920
Sevier, Tennessee
Son, age 7
Sevier, Tennessee · implied b. ~1913 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | James C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Sevier, Tennessee
Son, age 17
Sevier, Tennessee · implied b. ~1913 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirby |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Occupation | Laborer |
| Industry | On Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Knox-County, Tennessee
Head, age 27
Knox-County, Tennessee · implied b. ~1913 — 4 household members
| Surname | Kirby |
| Given Name | James C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Tennessee |
| 1935 Residence (City) | Swir |
| 1935 Residence (County) | Sevier |
| Occupation | Laborer |
| Industry | Building Industry |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | No 8 |
| 1935 Residence | Tennessee |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Kirby across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Kirby (~0.92 confidence) and father James Kirby (~0.92 confidence) and mother Gertrude Kirby (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Kirby
b. ~1878
Source father
● Household
· direct · ~0.92
Father
James Kirby
b. ~1854
Source father
● Household
· direct · ~0.92
Mother
Gertrude Kirby
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Kirby
Head · 1940 · age 27 · b. ~1913 · Tennessee
★ 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 — Knox-County, Tennessee
Open full size
1940 US Federal Census — Knox-County, Tennessee
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03958-00030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Burleson | 13 | Son | — | Tennessee |
| 2 | Betty Jane Burleson | 11 | Daughter | — | Tennessee |
| 3 | Minnie Coldlayer | Coldlayer | 72 | Head | — | Ohio |
| 4 | Gladys Coldlayer | Coldlayer | 19 | Daughter | — | Tennessee |
| 5 | James C Kirby THIS PERSON | 27 | Head | Laborer | Tennessee |
| 6 | Nell Kirby | 30 | Wife | — | Tennessee |
| 7 | James Kirby | 3 | Son | — | Tennessee |
| 8 | Billy V Kirby | 1 | Son | — | Tennessee |
| 9 | William D Fenton | Liston | 28 | Head | Waiter | Tennessee |
| 10 | Ruby Fenton | Liston | 24 | Wife | Operator | Tennessee |
| 11 | Hollis Henry | 35 | Head | Truck Driver | Tennessee |
| 12 | Myrtle Henry | 33 | Wife | Saleslady | Tennessee |
| 13 | Herbert Henry | 16 | Son | — | Tennessee |
| 14 | Ines Hunt | 30 | Sister in law | Clothes Checker | Tennessee |
| 15 | Edward Martin | 22 | Head | Laborer | Tennessee |
| 16 | Genevieve Martin | 21 | Wife | — | Tennessee |
| 17 | Colleen Martin | 3 | Daughter | — | Tennessee |
| 18 | Brenda Martin | 2 | Daughter | — | Tennessee |
| 19 | Caron Bayless | 39 | Head | Laborer | Tennessee |
| 20 | Willard Bayless | 24 | Brother | Attendant | Tennessee |
| 21 | William H Johnson | 65 | Head | Salesman | Tennessee |
| 22 | Mary E Johnson | 66 | Wife | — | Tennessee |
| 23 | Edward Lightly | 39 | Head | File Clerk | England |
| 24 | Mabel Lightly | 36 | Wife | — | Tennessee |
| 25 | William Lightly | 11 | Son | — | Tennessee |
| 26 | H. B. Perry | 47 | Head | Salesman | Tennessee |
| 27 | Edith Perry | 45 | Wife | Cook | Tennessee |
| 28 | Katherine Perry | 19 | Daughter | Packer | Tennessee |
| 29 | Sarah K Fisher | 32 | Sister in law | — | Tennessee |
| 30 | James M Knight | 31 | Head | Register Clerk | North Carolina |
| 31 | Virginia Lee Knight | 25 | Wife | Industrial Worker | Tennessee |
| 32 | Mary M Knight | 1 | Daughter | — | Tennessee |
| 33 | Laney Miller | 21 | Housekeeper | Housekeeper | Tennessee |
| 34 | Stanley Conner | 25 | Head | Presser | Tennessee |
| 35 | John Conner | 22 | Brother | Machine Worker | Tennessee |
| 36 | Mary Conner | 49 | Mother | Finisher | Tennessee |
| 37 | Virgil Holcombe | 35 | Son in law | Carpenter | Georgia |
| 38 | Stella Holcombe | 26 | Sister | Clerk | Tennessee |
| 39 | Virgil Jr Holcombe | 4 | Nephew | — | Georgia |
| 40 | Mary Gail | 0 | Niece | — | Tennessee |
Pedigree Summary
James
Gen 1 · 3 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)