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Betty Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Betty Martin across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Martin |
| Given Name | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Bonnie Martin | Daughter | — | 5 | ~1935 |
| Joanne Martin | Daughter | — | 15 | ~1925 |
| Betty Martin | Daughter | — | 12 | ~1928 |
| Harry Martin | Son | — | 10 | ~1930 |
| Harry Martin | Head | — | 47 | ~1893 |
| Marie Martin | Daughter | — | 22 | ~1918 |
| Ruth Martin | Daughter | — | 17 | ~1923 |
| William Martin | Son | — | 7 | ~1933 |
| Laura Martin | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Marion, Indiana
Daughter, age 2
Marion, Indiana · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Betty F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 12
Marion-County, Indiana · implied b. ~1928 — 9 household members
| Surname | Martin |
| Given Name | Betty |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| 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 Betty Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Martin
Daughter · 1940 · age 12 · b. ~1928 · Indiana
★ You are viewing this record
Sibling
Joanne Martin
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bonnie Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Martin
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Martin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Martin
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Martin
Sibling · 1940 · age 10
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01126-00496)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Scheer, Frances Corts | 12 | nephew | — | Indiana |
| 2 | Byhron Miller | 41 | head | Shipping Clerk | Nebraska |
| 3 | Elizabeth Miller | 39 | wife | — | Nebraska |
| 4 | Ira Miller | 21 | son | Finisher | Nebraska |
| 5 | William Ernsting | 74 | head | — | Germany |
| 6 | Lena Ernsting | 78 | wife | — | Indiana |
| 7 | Nora Mcclintic | 66 | head | — | Indiana |
| 8 | William Free | 55 | lodger | Salesman | Indiana |
| 9 | Harry Ernsting | 47 | head | Proprietor | Indiana |
| 10 | Charlotte Ernsting | 46 | wife | — | Pennsylvania |
| 11 | Dora Ernsting | 16 | daughter | — | Indiana |
| 12 | Richard Ernsting | 11 | son | — | Indiana |
| 13 | Jean Ernsting | 13 | daughter | — | Indiana |
| 14 | Harry Martin | 47 | head | Mechanic | Indiana |
| 15 | Laura Martin | 40 | wife | — | Indiana |
| 16 | Marie Martin | 22 | daughter | Bookkeeper | Indiana |
| 17 | Ruth Martin | 17 | daughter | — | Indiana |
| 18 | Joanne Martin | 15 | daughter | — | Indiana |
| 19 | Betty Martin THIS PERSON | 12 | daughter | — | Indiana |
| 20 | Harry Martin | 10 | son | — | Indiana |
| 21 | William Martin | 7 | son | — | Indiana |
| 22 | Bonnie Jean Martin | 5 | daughter | — | Indiana |
| 23 | Angelia O'Grady | 22 | head | Attendant | Indiana |
| 24 | Vera O'Grady | 20 | daughter | — | Indiana |
| 25 | Nicholas Tsokos | 51 | head | Proprietor | Greece |
| 26 | Mary Tsokos | 43 | wife | — | Greece |
| 27 | Irene Tsokos | 15 | daughter | — | Pennsylvania |
| 28 | Walter Nendel | 48 | head | Tool Maker | Germany |
| 29 | Mabel Nendel | 41 | wife | — | Indiana |
| 30 | Charles Hamming | 90 | head | — | Indiana |
| 31 | Caroline Hamming | 85 | wife | — | Indiana |
| 32 | William Sutton | 63 | head | Owner | Indiana |
| 33 | Laura Sutton | 60 | wife | — | Indiana |
| 34 | Pearl Sutton | 34 | daughter | Bookkeeper | Indiana |
| 35 | Charles Sutton | 30 | son | Music Director | Indiana |
| 36 | Opal Sutton | 19 | daughter | Gen. Clerk | Indiana |
| 37 | Florence Sutton | 11 | daughter | — | Indiana |
| 38 | Mary Herrold | 62 | head | — | Indiana |
| 39 | Edward Herrold | 41 | son | Bookkeeper | Indiana |
| 40 | Thomas Herrold | 39 | son | Salesman | 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)