RM
Ralph Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sussex-County, Delaware
Our Model Tree links this Ralph Martin across the 1920, 1930 and 1940 US Censuses in Sussex-County, Delaware (XGBoost, ~Confirmed), with identified parents Harry & Virgie — first a head (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Head
Born: Delaware
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sussex-County, Delaware |
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Rehoboth |
| 1935 Residence (County) | Sussex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Stockley Bros |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Laborer |
| Township / Ward | Rehoboth |
| Est. Birth Year | ~1911 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| James Martin | Son | — | 6 | ~1934 |
| Elizabeth Martin | Daughter | — | 9 | ~1931 |
| Ralph Martin | Head | — | 29 | ~1911 |
| Ralph Martin | Son | — | ~1940 | |
| Robert Martin | Son | — | 4 | ~1936 |
| Patricia Martin | Daughter | — | 2 | ~1938 |
| Elsie Martin | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Sussex, Delaware
Son, age 9
Sussex, Delaware · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Sussex, Delaware
Other, age 19
Sussex, Delaware · implied b. ~1911 — 29 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph A |
| Relationship to Head | R |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Delaware |
| Age at First Marriage | 19 |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Laborer |
| Industry | Canning Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 3 |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Sussex-County, Delaware
Head, age 29
Sussex-County, Delaware · implied b. ~1911 — 7 household members
| Surname | Martin |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Delaware |
| 1935 Residence (City) | Rehoboth |
| 1935 Residence (County) | Sussex |
| Occupation | Laborer |
| Industry | Stockley Bros |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Ralph Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Martin (~0.92 confidence) and mother Virgie Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Martin
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Virgie Martin
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Martin
Head · 1940 · age 29 · b. ~1911 · Delaware
★ 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 — Sussex-County, Delaware
Open full size
1940 US Federal Census — Sussex-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00548-00717)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Burton | 31 | Head | Janitor | Delaware |
| 2 | Benjamin Burton | 17 | Brother | New Worker | Delaware |
| 3 | Dallas Dean | 24 | Lodger | New Worker | Delaware |
| 4 | Theresa Phillips | 37 | Head | — | Delaware |
| 5 | James D. Burton | 23 | Son | Laborer | Delaware |
| 6 | Wm. C. Miller | 43 | Head | Laborer | Delaware |
| 7 | Rebecca Miller | 34 | Wife | Cook | Delaware |
| 8 | Elmer J. Harman | 54 | Head | Attendant | Delaware |
| 9 | Leroy Harman | 21 | Son | Laborer | Delaware |
| 10 | Clinton Harman | 53 | Head | Laborer | Delaware |
| 11 | Lena Piney | 60 | Head | Mgr. | Pennsylvania |
| 12 | Oswald Winchester | 24 | Head | Bartender | Delaware |
| 13 | Chas. H. White | 40 | Head | Watchman | Delaware |
| 14 | Bernard Tankard | 62 | Lodger | Watchman | Virginia |
| 15 | Ralph Martin THIS PERSON | 29 | Head | Laborer | Delaware |
| 16 | Elsie Martin | 31 | Wife | — | Delaware |
| 17 | Elizabeth Martin | 9 | Daughter | — | Delaware |
| 18 | James Martin | 6 | Son | — | Delaware |
| 19 | Robert Martin | 4 | Son | — | Delaware |
| 20 | Patricia Martin | 2 | Daughter | — | Delaware |
| 21 | Ralph Martin | 0 | Son | — | Delaware |
| 22 | Harold Steele | 41 | Head | Mason | Delaware |
| 23 | Dorothy Steele | 36 | Wife | — | Delaware |
| 24 | Ayers Steele | 16 | Son | New Worker | Delaware |
| 25 | Gloria Steele | 12 | Daughter | — | Delaware |
| 26 | Ronald Steele | 9 | Son | — | Delaware |
| 27 | Artie Lee Steele | 6 | Daughter | — | Delaware |
| 28 | Gordon Steele | 2 | Son | — | Delaware |
| 29 | Herbert F. Mone | 33 | Head | Carpenter | Delaware |
| 30 | Florence Mone | 30 | Wife | — | Delaware |
| 31 | Eddie M. Mone | 10 | Son | — | Delaware |
| 32 | Daniel F. Mone | 2 | Son | — | Delaware |
| 33 | Myrtle Corrine Mone | 0 | Daughter | — | Delaware |
| 34 | Healy Mumford | 58 | Head | Engineer | Delaware |
| 35 | Harry C. Mumford | 22 | Son | Laborer | Delaware |
| 36 | Zadoc Burton | 42 | Head | Carpenter | Delaware |
| 37 | Gerald Burton | 30 | Wife | — | Delaware |
| 38 | John Burton | 12 | Son | — | Delaware |
| 39 | Margaret Burton | 9 | Daughter | — | Delaware |
| 40 | Phyllis Burton | 4 | Daughter | — | Delaware |
Pedigree Summary
Ralph
Gen 1 · 2 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)