RM
Ruth Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Ruth Martin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Wm & Arthur — first a daughter (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Martin |
| Given Name | Ruth C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | """" |
| 1935 Residence (County) | """" |
| Additional Details | |
| Occupation | Lady |
| Highest Grade | H 4 |
| 1935 Residence | """" |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Lady |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Martin | Daughter | — | 21 | ~1919 |
| Boyd Martin | Head | — | 49 | ~1891 |
| Genevieve Shirley | Other | — | 45 | ~1895 |
| John Shirley | Other | — | 44 | ~1896 |
| Carole Perkins | Other | — | 72 | ~1868 |
| Kenneth Martin | Son | — | 14 | ~1926 |
| Helen Martin | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 1
Baltimore, Maryland · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 11
Baltimore, Maryland · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 21
Baltimore-City-County, Maryland · implied b. ~1919 — 7 household members
| Surname | Martin |
| Given Name | Ruth C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | """" |
| 1935 Residence (County) | """" |
| Occupation | Lady |
| Highest Grade | H 4 |
| 1935 Residence | """" |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Ruth Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Wm Martin (~0.92 confidence) and father Arthur Martin (~0.92 confidence) and father Boyd Martin (~0.92 confidence) and mother Lillie Martin (~0.92 confidence) and mother Alice Martin (~0.92 confidence) and mother Helen Martin (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wm Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Arthur Martin
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Boyd Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Lillie Martin
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Alice Martin
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Helen Martin
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Martin
Daughter · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Kenneth Martin
Sibling · 1940 · age 14
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01518-00141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Russell Worthington | 63 | Head | Nurse | Maryland |
| 2 | Ellen Worthington | 43 | Wife | Music | Maryland |
| 3 | Boyd Martin | 49 | Head | Treasury Dept Gov | N. Carolina |
| 4 | Helen Martin | 43 | Wife | Home Maker | Maryland |
| 5 | Ruth C. Martin THIS PERSON | 21 | Daughter | Lady | Maryland |
| 6 | Kenneth Martin | 14 | Son | School Work | Maryland |
| 7 | Carole Perkins | 72 | Mother-in-law | — | Maryland |
| 8 | John Shirley | 44 | Brother-in-law | — | Maryland |
| 9 | Genevieve Shirley | 45 | Sister | State Unemployment | Maryland |
| 10 | Andrew Banks | 39 | Head | Newspaper Man | Maryland |
| 11 | Lucy H. Banks | 37 | Wife | Home Maker | Virginia |
| 12 | Andrew Jr. Banks | 9 | Son | — | Maryland |
| 13 | Lucy Hyde Banks | 12 | Daughter | — | Maryland |
| 14 | Mary Ellen Banks | 8 | Black | — | Maryland |
| 15 | Charles Cloggett | 64 | Head | Realestate Salesman | Maryland |
| 16 | Margaret E. Cloggett | 54 | Wife | Home Maker | Maryland |
| 17 | Charles Jr. Cloggett | 21 | Son | 3 Year High School | Maryland |
| 18 | Elbert E. West | 63 | Lodger | Clerk B & O R.R. | West Virginia |
| 19 | James A. Hogan | 58 | Head | Whole Sale Meat Business | Pennsylvania |
| 20 | Elsie Hogan | 50 | Wife | Home Maker | Pennsylvania |
| 21 | James D. Pyott | 41 | Head | Dentist | Connecticut |
| 22 | Eva Pyott | 38 | Wife | Lady | Virginia |
| 23 | Silvine Marbury | 72 | Head | Lady | Maryland |
| 24 | Taylor Marbury | 26 | Son | Asst Manager Traffic Dept | Maryland |
| 25 | Ella Slingluff | 63 | Sister | Lady | Maryland |
| 26 | Vallee Slingluff | 57 | Sister | Lady | Maryland |
| 27 | Francis Jones | 62 | Head | Hostess Home Maker | Maryland |
| 28 | Francis Jones | 26 | Son | Telephone Co | New York |
| 29 | James Surance | 31 | Son | Lawyer | Maryland |
| 30 | Geoffrey Surance | 20 | Son | Clerk Bethlehem Steel Co | Maryland |
| 31 | Rhoda C. Surance | 12 | Daughter | — | Maryland |
| 32 | Mary Simmons | 26 | Head | Lady | Maryland |
| 33 | Lawrence Simmons | 52 | Son | Banking Business | Maryland |
| 34 | Frank H. Smith | 19 | Head | Lady Home Maker | Mississippi |
| 35 | Knotta Cannon | 58 | Niece | Kindergarten Teacher | Mississippi |
| 36 | Grover B. Wray | 60 | Head | Lady | Maryland |
| 37 | Edward W. Wray | 40 | Son | — | Maryland |
| 38 | Clara Whith | 40 | Head | Laundress | Georgia |
| 39 | William Whith | 50 | Husband | Waiter | S. Carolina |
| 40 | Eva Whith | 50 | Sister | Home Work | Georgia |
Pedigree Summary
Ruth + 1 sibling
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)