MR
Martha Ross — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Nassau-County, Florida
Our Model Tree links this Martha Ross across the 1930 and 1940 US Censuses in Nassau-County, Florida (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Florida
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nassau-County, Florida |
| Surname | Ross |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Hilliard |
| 1935 Residence (County) | Nassau |
| Additional Details | |
| Occupation | House work |
| Industry | Home |
| Class of Worker | NP |
| Hours Worked | 40 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | House Work |
| Township / Ward | Hilliard |
| Est. Birth Year | ~1924 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Sylvester Ross | Son | — | 14 | ~1926 |
| Herman Bell | Other | — | 24 | ~1916 |
| Ace Green | Other | — | 5 | ~1935 |
| Ervin Ross | Son | — | 17 | ~1923 |
| Ella Ross | Head | — | 52 | ~1888 |
| Mary Ross | Daughter | — | 16 | ~1924 |
| Martha Ross | Daughter | — | 16 | ~1924 |
| Heziah Ross | Son | — | 12 | ~1928 |
Census Appearances
1930
Nassau, Florida
Daughter, age 6
Nassau, Florida · implied b. ~1924 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ross |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Nassau-County, Florida
Daughter, age 16
Nassau-County, Florida · implied b. ~1924 — 8 household members
| Surname | Ross |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Florida |
| 1935 Residence (City) | Hilliard |
| 1935 Residence (County) | Nassau |
| Occupation | House work |
| Industry | Home |
| Class of Worker | NP |
| Hours Worked | 40 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Martha Ross across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Ross
Daughter · 1940 · age 16 · b. ~1924 · Florida
★ You are viewing this record
Sibling
Heziah Ross
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ervin Ross
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvester Ross
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Ross
Sibling · 1940 · age 16
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 — Nassau-County, Florida
Open full size
1940 US Federal Census — Nassau-County, Florida
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00601-00954)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna E. Pentall | 49 | Wife | House Wife | Florida |
| 42 | Ralph Crews | 14 | Son | — | Florida |
| 43 | Arden Crews | 13 | Son | — | Florida |
| 44 | Willie Davis | 29 | Head | House Work | Georgia |
| 45 | Peter Washington | 41 | Son | Labour | Florida |
| 46 | Willie Davis | 11 | Lodger | — | Georgia |
| 47 | Louise Davis | 9 | Lodger | — | Florida |
| 48 | Earl Simpson | 40 | Lodger | Teacher | Florida |
| 49 | Emma L. Bell | 44 | Head | House Work | Georgia |
| 50 | Clifford Harris | 32 | Lodger | — | Florida |
| 51 | James E. Byrd | 14 | Lodger | — | Florida |
| 52 | Alfred Byrd | 10 | Lodger | — | Florida |
| 53 | Leroy Leroy | 4 | Lodger | — | Florida |
| 54 | Penny Calhoun | 52 | Head | Maid | Florida |
| 55 | James Calhoun | 19 | Son | Labour | Florida |
| 56 | Joe Calhoun | 15 | Son | Labour | Florida |
| 57 | Willie Tumberlin | 65 | Lodger | Labour | Georgia |
| 58 | Marietta Battles | 72 | Head | House Work | Florida |
| 59 | J. Stone | 57 | Son | Labour | Florida |
| 60 | Effie L. Damier | 34 | Head | House Work | Florida |
| 61 | Willie M. Damier | 17 | Daughter | — | Florida |
| 62 | Arthur Damier | 16 | Son | — | Florida |
| 63 | Leroy Damier | 13 | Son | — | Florida |
| 64 | George Washington | 90 | Uncle | — | Florida |
| 65 | Dan Gummer | 52 | Head | Labour | Florida |
| 66 | Dashie Gummer | 36 | Wife | House Wife | Florida |
| 67 | Mary Bryant | 66 | Lodger | — | Florida |
| 68 | Lanie Bryant | 7 | Lodger | — | Florida |
| 69 | Ella Ross | 52 | Head | Labour | Florida |
| 70 | Ervin Ross | 17 | Son | — | Florida |
| 71 | Martha Ross THIS PERSON | 16 | Daughter | House Work | Florida |
| 72 | Mary Ross | 16 | Daughter | House Work | Florida |
| 73 | Sylvester Ross | 14 | Son | — | Florida |
| 74 | Heziah Ross | 12 | Son | — | Florida |
| 75 | Ace Green | 5 | Grand Son | — | Florida |
| 76 | Herman Bell | 24 | Lodger | Labour | Florida |
| 77 | Willie Hansell | 32 | Head | Labour | Florida |
| 78 | Lucille Hansell | 33 | Wife | House Wife | Alabama |
| 79 | Percy Smith | 42 | Head | Labour | Florida |
| 80 | Ophelia Harmon | 64 | Head | House Work | 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)