MN
Mary Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Columbia-County, Florida
Our Model Tree links this Mary Nelson across the 1920, 1930 and 1940 US Censuses in Columbia-County, Florida (XGBoost, ~Confirmed) — first a spouse (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Female
Spouse
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Florida |
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (County) | Columbia |
| Additional Details | |
| Occupation | Same place |
| Highest Grade | H 4 |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Same Place |
| Township / Ward | Precinct No 8 Mason |
| Est. Birth Year | ~1904 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Nelson | Daughter | — | 16 | ~1924 |
| Ed Nelson | Head | — | 38 | ~1902 |
| Lerty Nelson | Son | — | 14 | ~1926 |
| Mary Nelson | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Columbia, Florida
Other, age 20
Columbia, Florida · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Occupation | Cook |
| Industry | At Hotel |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Columbia, Florida
Spouse, age 27
Columbia, Florida · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 15 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Columbia-County, Florida
Spouse, age 36
Columbia-County, Florida · implied b. ~1904 — 4 household members
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (County) | Columbia |
| Occupation | Same place |
| Highest Grade | H 4 |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nelson
Spouse · 1940 · age 36 · b. ~1904 · Florida
★ 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 — Columbia-County, Florida
Open full size
1940 US Federal Census — Columbia-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00579-00201)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Cason | 5 | Daughter | Same Place | Florida |
| 2 | Audrey Cason | 4 | Daughter | Same Place | Florida |
| 3 | Henrietta Cason | 63 | Mother | Same Place | Georgia |
| 4 | Ed Nelson | 38 | Head | Same Place | Florida |
| 5 | Mary Nelson THIS PERSON | 36 | Wife | Same Place | Florida |
| 6 | Mary O. Nelson | 16 | Daughter | Same Place | Florida |
| 7 | Lerty Nelson | 14 | Son | Same Place | Florida |
| 8 | Paul Greek | 41 | Head | 12 | Georgia |
| 9 | Emily Greek | 34 | Wife | — | Georgia |
| 10 | J. T. Greek | 18 | Son | 50 | Florida |
| 11 | Bessie Greek | 14 | Daughter | — | Florida |
| 12 | Sallie Greek | 12 | Daughter | — | Florida |
| 13 | Annie Greek | 10 | Daughter | — | Florida |
| 14 | Thelma Greek | 8 | Daughter | — | Florida |
| 15 | Charlie Greek | 6 | Son | — | Florida |
| 16 | Barney Greek | 4 | Son | — | Florida |
| 17 | Bill H. Greek | 0 | Son | — | Florida |
| 18 | Brantley Harden | 25 | Head | 50 | Florida |
| 19 | Lois Harden | 25 | Wife | — | Florida |
| 20 | William E. Harden | 3 | Son | — | Florida |
| 21 | Roy L. Harden | 1 | Son | — | Florida |
| 22 | Milton Harden | 23 | Brother | 50 | Florida |
| 23 | Luana Harden | 20 | Sister in Law | — | Florida |
| 24 | R. Lee Shealy | 74 | Head | Same Place | Florida |
| 25 | Lucy Shealy | 74 | Wife | Same Place | Florida |
| 26 | Liff Shealy | 42 | Son | Same Place | Florida |
| 27 | Elyse F. Shealy | 44 | Daughter in Law | Same Place | Florida |
| 28 | Claude Pope | 31 | Head | 50 | Georgia |
| 29 | Bertie Pope | 27 | Wife | — | Georgia |
| 30 | Joseph F. Pope | 9 | Son | — | Georgia |
| 31 | Gloria J. Pope | 4 | Daughter | — | Florida |
| 32 | Gladys L. Pope | 3 | Daughter | — | Florida |
| 33 | Claude Jr. Pope | 1 | Son | — | Florida |
| 34 | Harold Hitt | 61 | Head | Same Place | Florida |
| 35 | Latie Hitt | 61 | Wife | Same Place | Florida |
| 36 | Richard Hitt | 26 | Son | Same Place | Florida |
| 37 | Evelyn Hitt | 19 | Daughter in Law | Same Place | Florida |
| 38 | Alex Nelson | 38 | Head | Same Place | Florida |
| 39 | Minnie Nelson | 35 | Wife | Same Place | Florida |
| 40 | Lillie M. Nelson | 15 | Daughter | Same Place | Florida |
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)