RM
Robert Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegany-County, Maryland
Our Model Tree links this Robert Martin across the 1920, 1930 and 1940 US Censuses in Allegany-County, Maryland (XGBoost, ~Confirmed), with identified parents Robert & Robert — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegany-County, Maryland |
| Surname | Martin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 6 |
| 1935 Residence (County) | Allegany |
| Additional Details | |
| Occupation | Attendant |
| Industry | Gas Station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Attendant |
| Township / Ward | Elect Dist 6 |
| Est. Birth Year | ~1915 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Martin | Daughter | — | 13 | ~1927 |
| Robert Martin | Head | — | 53 | ~1887 |
| Robert Martin | Son | — | 25 | ~1915 |
| Lottie Martin | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Allegany, Maryland
Son, age 5
Allegany, Maryland · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Allegany, Maryland
Son, age 15
Allegany, Maryland · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Robert R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| 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
Allegany-County, Maryland
Son, age 25
Allegany-County, Maryland · implied b. ~1915 — 4 household members
| Surname | Martin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 6 |
| 1935 Residence (County) | Allegany |
| Occupation | Attendant |
| Industry | Gas Station |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 1300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| 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 Robert Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Martin (~0.92 confidence) and father Robert Martin (~0.92 confidence) and mother Dottie Martin (~0.92 confidence) and mother Lottie Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Martin
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Robert Martin
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Dottie Martin
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Lottie Martin
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Martin
Son · 1940 · age 25 · b. ~1915 · Maryland
★ You are viewing this record
Sibling
Charlotte Martin
Sibling · 1940 · age 13
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 — Allegany-County, Maryland
Open full size
1940 US Federal Census — Allegany-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01498-00218)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Rupert | 41 | Head | Bottler | Maryland |
| 2 | Nellie Rupert | 41 | Wife | — | Maryland |
| 3 | Richard Rupert | 16 | Son | — | Maryland |
| 4 | Dorothy Rupert | 11 | Daughter | — | Maryland |
| 5 | Janice L. Rupert | 2 | Daughter | — | Maryland |
| 6 | Janet A. Rupert | 5 | Daughter | — | Maryland |
| 7 | Louis May | 21 | In law | Driver | S. Carolina |
| 8 | Mary May | 20 | Daughter | — | Maryland |
| 9 | Robert J. Martin | 53 | Head | Repairer | Maryland |
| 10 | Lottie Martin | 48 | Wife | — | Maryland |
| 11 | Robert Martin THIS PERSON | 25 | Son | Attendant | Maryland |
| 12 | Charlotte Martin | 13 | Daughter | — | Maryland |
| 13 | Stanley Fields | 40 | Head | Proprietor | Ohio |
| 14 | Hale Fields | 27 | Wife | — | West Virginia |
| 15 | Romaine Bizer | 54 | Mother in law | — | Pennsylvania |
| 16 | Robert Bizer | 20 | Brother in law | Circulation Mgr | Maryland |
| 17 | James Clark | 73 | Head | — | Scotland |
| 18 | Margaret Clark | 47 | Daughter | — | Pennsylvania |
| 19 | Jennie Clark | 40 | Daughter | Servant | Maryland |
| 20 | Nellie Clark | 50 | Sister | Servant | Maryland |
| 21 | William Clark | 52 | Brother | Coal Miner | Scotland |
| 22 | Bridget White | 60 | Head | — | Maryland |
| 23 | Nellie White | 25 | Daughter | Bobbin Dept | Maryland |
| 24 | Sadie White | 23 | Daughter | Waitress | Maryland |
| 25 | Catherine White | 20 | Daughter | Operator | Maryland |
| 26 | Paul White | 35 | Son | Bottler | Maryland |
| 27 | Richard Johnson | 31 | Head | Chemist | Maryland |
| 28 | Rosene Johnson | 28 | Wife | — | Maryland |
| 29 | Leo Rice | 39 | Head | Sexton | Maryland |
| 30 | Jessie Rice | 38 | Wife | — | Maryland |
| 31 | John Rice | 53 | Brother | Machine Repair Man | Maryland |
| 32 | Mary Rice | 19 | Daughter | — | Maryland |
| 33 | Donald Rice | 9 | Son | — | Maryland |
| 34 | Donald Welch | 24 | Head | Caretaker | Ohio |
| 35 | Lillian Welch | 28 | Wife | — | Maryland |
| 36 | Donald Welch | 2 | Son | — | Maryland |
| 37 | George Speis | 32 | Head | Clerk | Maryland |
| 38 | Goldie Speis | 20 | Wife | — | West Va |
| 39 | Lewis Twigg | 18 | Brother in law | Carpenter Apprentice | Maryland |
| 40 | Georgia Speis | 1 | Daughter | — | Maryland |
Pedigree Summary
Robert + 1 sibling
Gen 1 · 4 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)