JF
John Frost — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Kansas
Our Model Tree links this John Frost across the 1930 and 1940 US Censuses in Douglas-County, Kansas (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Kansas |
| Surname | Frost |
| Given Name | John Milton |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1927 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| June Frost | Daughter | — | 9 | ~1931 |
| Robert Frost | Head | — | 38 | ~1902 |
| Sylmer Frost | Son | — | 14 | ~1926 |
| Betty Frost | Daughter | — | 11 | ~1929 |
| Robert Frost | Son | — | 18 | ~1922 |
| Clayton Frost | Son | — | 16 | ~1924 |
| Alice Frost | Spouse | — | 38 | ~1902 |
| John Frost | Son | — | 13 | ~1927 |
Census Appearances
1930
Douglas, Kansas
Son, age 3
Douglas, Kansas · implied b. ~1927 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Frost |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Douglas-County, Kansas
Son, age 13
Douglas-County, Kansas · implied b. ~1927 — 8 household members
| Surname | Frost |
| Given Name | John Milton |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Douglas |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 John Frost across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Frost
Son · 1940 · age 13 · b. ~1927 · Kansas
★ You are viewing this record
Sibling
Betty Frost
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Frost
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clayton Frost
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylmer Frost
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Frost
Sibling · 1940 · age 9
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 — Douglas-County, Kansas
Open full size
1940 US Federal Census — Douglas-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01229-00915)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cora Anderson | 31 | wife | Maid | Kansas |
| 42 | Andy Meade | 36 | head | Farmer | Kentucky |
| 43 | Ida Meade | 39 | wife | — | Kentucky |
| 44 | Kenneth Meade | 13 | son | — | Kentucky |
| 45 | Robert W. Jr. Mumford | 25 | head | Janitor | Kansas |
| 46 | Mildred Mumford | 20 | wife | — | Kansas |
| 47 | Robert H. Mumford | 0 | son | — | Kansas |
| 48 | Mary Hutchison | 78 | head | — | Indiana |
| 49 | Thomas Morris | 78 | head | — | Missouri |
| 50 | Myrtle Lake | 52 | head | — | Missouri |
| 51 | Left By Mistake | None | — | — | — |
| 52 | — | None | — | — | — |
| 53 | Millie Hackley | 72 | head | — | Missouri |
| 54 | William Bradley | 68 | head | Laborer | Missouri |
| 55 | Ellie S. Bradley | 57 | wife | — | Missouri |
| 56 | Charles Bradley | 26 | son | — | Missouri |
| 57 | Clarence Bradley | 24 | son | Reel Tender | Missouri |
| 58 | John Snow | 53 | head | Flagman | Kansas |
| 59 | Bessie L. Snow | 53 | wife | — | Kansas |
| 60 | George Myers | 22 | nephew | — | Kansas |
| 61 | Robert Anthony | 53 | head | Gardner | Kansas |
| 62 | Robert M. Frost | 38 | head | Mechanic | Missouri |
| 63 | Alice M. Frost | 38 | wife | — | Kansas |
| 64 | Robert M. Jr. Frost | 18 | son | — | Kansas |
| 65 | Clayton J. Frost | 16 | son | — | Kansas |
| 66 | Sylmer G. Frost | 14 | son | — | Kansas |
| 67 | John Milton Frost THIS PERSON | 13 | son | — | Kansas |
| 68 | Betty Ann Frost | 11 | daughter | — | Kansas |
| 69 | June Marie Frost | 9 | daughter | — | Kansas |
| 70 | Miles M. Owens | 45 | head | Mattress | Kansas |
| 71 | Sophia Owens | 44 | wife | — | Kansas |
| 72 | Marion L. Owens | 15 | son | — | Kansas |
| 73 | Marie E. Owens | 12 | daughter | — | Kansas |
| 74 | George B. Wilson | 44 | head | Laborer | Kansas |
| 75 | Eliza Wilson | 67 | mother | — | Kansas |
| 76 | Myrtle E. Wilson | 36 | head | Clerk | Arkansas |
| 77 | Peggy Louise Wilson | 10 | daughter | — | Kansas |
| 78 | William H. Greer | 78 | head | — | Missouri |
| 79 | Leta E. Greer | None | wife | Taper | Kansas |
| 80 | Millie Hackley | 76 | head | — | Missouri |
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)