RM
Ruby Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lawrence-County, Indiana
Our Model Tree links this Ruby Martin across the 1930 and 1940 US Censuses in Lawrence-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lawrence-County, Indiana |
| Surname | Martin |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Pleasant Run Township |
| 1935 Residence (County) | Lawrence |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Pleasant Run Township |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruby | Age | Birth yr |
|---|---|---|---|---|
| Ollie Martin | Head | — | 52 | ~1888 |
| Everett Martin | Son | — | 18 | ~1922 |
| Dessie Martin | Spouse | — | 45 | ~1895 |
| John Martin | Son | — | 21 | ~1919 |
| Hilda Martin | Daughter | — | 27 | ~1913 |
| James Martin | Son | — | 13 | ~1927 |
| Ruby Martin | Daughter | — | 15 | ~1925 |
| Warren Martin | Son | — | 18 | ~1922 |
Census Appearances
1930
Lawrence, Indiana
Daughter, age 5
Lawrence, Indiana · implied b. ~1925 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Lawrence-County, Indiana
Daughter, age 15
Lawrence-County, Indiana · implied b. ~1925 — 8 household members
| Surname | Martin |
| Given Name | Ruby |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Pleasant Run Township |
| 1935 Residence (County) | Lawrence |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Ruby Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruby Martin
Daughter · 1940 · age 15 · b. ~1925 · Indiana
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Sibling
John Martin
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Warren Martin
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hilda Martin
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Martin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Everett Martin
Sibling · 1940 · age 18
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 — Lawrence-County, Indiana
Open full size
1940 US Federal Census — Lawrence-County, Indiana
Page Contents
21 people indexed on this census page (nara:1940:m-t0627-01071-00427)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucy D. Sipes | 21 | Head | 25 | Indiana |
| 2 | William R. Sipes | 2 | Son | — | — |
| 3 | George Sipes | 46 | Head | Laborer | Indiana |
| 4 | Emma Sipes | 47 | Wife | — | Indiana |
| 5 | Winford Sipes | 17 | Son | New Worker | Indiana |
| 6 | Hazel Sipes | 15 | Daughter | — | Indiana |
| 7 | Roy Sipes | 13 | Son | — | Indiana |
| 8 | Floyd Sipes | 11 | Son | — | Indiana |
| 9 | Eithel Martin | 23 | Head | Laborer | Indiana |
| 10 | Ethel Martin | 22 | Wife | — | Indiana |
| 11 | Ollie Martin | 52 | Head | Laborer | Indiana |
| 12 | Dessie Martin | 45 | Wife | — | Indiana |
| 13 | Hilda Martin | 27 | Daughter | Laborer | Indiana |
| 14 | John Martin | 21 | Son | Laborer | Indiana |
| 15 | Warren Martin | 18 | Son | Laborer | Indiana |
| 16 | Everett Martin | 18 | Son | Laborer | Indiana |
| 17 | Ruby Martin THIS PERSON | 15 | Daughter | — | Indiana |
| 18 | James Martin | 13 | Son | — | Indiana |
| 19 | Cecil E. Sipes | 43 | Head | Laborer | Indiana |
| 20 | Perry Stanfield | 33 | Half Brother | Farmer | Indiana |
| 21 | Lucinda Sipes | 64 | Mother | — | Indiana |
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)