RN
Robert Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Robert Nelson across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents Robert & Robert — first a head (b.~1902), then head of a 8-person household.
Age 38
b. ~1902
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Nelson |
| Given Name | Robert M |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 7 |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Occupation | operator |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 7 |
| Income (1939) | 1000 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Operator |
| Township / Ward | Election District 7 |
| Est. Birth Year | ~1902 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Nelson | Daughter | — | 5 | ~1935 |
| Betty Nelson | Daughter | — | 10 | ~1930 |
| Regena Nelson | Daughter | — | 13 | ~1927 |
| June Nelson | Daughter | — | 8 | ~1932 |
| Mildred Nelson | Daughter | — | 14 | ~1926 |
| Robert Nelson | Head | — | 38 | ~1902 |
| Douglas Taylor | Other | — | 30 | ~1910 |
| Edna Nelson | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Baltimore, Maryland
Son, age 18
Baltimore, Maryland · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 28
Baltimore, Maryland · implied b. ~1902 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Robert M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farm |
| Industry | Helper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Head, age 38
Baltimore-County, Maryland · implied b. ~1902 — 8 household members
| Surname | Nelson |
| Given Name | Robert M |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 7 |
| 1935 Residence (County) | Baltimore |
| Occupation | operator |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 7 |
| Income (1939) | 1000 |
| Highest Grade | No 7 |
| 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 Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Nelson (~0.92 confidence) and father Robert Nelson (~0.92 confidence) and mother Mary Nelson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Nelson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Robert Nelson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mary Nelson
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Nelson
Head · 1940 · age 38 · b. ~1902 · Maryland
★ 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 — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01504-00334)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Hamm | 8 | son | — | Maryland |
| 2 | Edith Hamm | 5 | daughter | — | Maryland |
| 3 | Margaret Hamm | 4 | daughter | 0 | Maryland |
| 4 | Mary L Hamm | 1 | daughter | 0 | Maryland |
| 5 | Martin J Funk | 27 | head | Operator | Maryland |
| 6 | Peter Eppert | 16 | hired hand | Laborer | Maryland |
| 7 | G. Gilbert Price | 80 | head | — | Maryland |
| 8 | Emily L Price | 60 | wife | — | Maryland |
| 9 | Harry E Ayers | 57 | brother | — | Maryland |
| 10 | John M Hunt | 54 | head | Operator | Maryland |
| 11 | Charlotte S Hunt | 47 | wife | — | Maryland |
| 12 | Delma A Rozier | 15 | niece | — | Maryland |
| 13 | Ambrose P Hunt | 45 | head | Track Man | Maryland |
| 14 | Florence A Hunt | 40 | wife | — | Maryland |
| 15 | Morris R Hunt | 15 | son | Operator | Maryland |
| 16 | Margaret B Hunt | 10 | daughter | — | Maryland |
| 17 | Edwin J Mccray | 62 | son in law | Laborer | Pennsylvania |
| 18 | Robert M Nelson THIS PERSON | 38 | head | Operator | Maryland |
| 19 | Edna M Nelson | 33 | wife | — | Maryland |
| 20 | Mildred E Nelson | 14 | daughter | — | Maryland |
| 21 | Regena M Nelson | 13 | daughter | — | Maryland |
| 22 | Betty L Nelson | 10 | daughter | — | Maryland |
| 23 | June M Nelson | 8 | daughter | — | Maryland |
| 24 | Dorothy S Nelson | 5 | daughter | — | Maryland |
| 25 | Douglas S Taylor | 30 | hired hand | Laborer | North Carolina |
| 26 | Margaret Greenwell | 67 | head | — | Maryland |
| 27 | Robert H Greenwell | 38 | son | Laborer | Maryland |
| 28 | Luke Henderson | 36 | head | Operator | Virginia |
| 29 | Nina Henderson | 33 | wife | — | Virginia |
| 30 | Howard Henderson | 11 | son | — | Virginia |
| 31 | Betty R Henderson | 9 | daughter | — | Virginia |
| 32 | Charles F Henderson | 6 | son | — | Virginia |
| 33 | Juanita Henderson | 2 | daughter | — | Virginia |
| 34 | Earley Blevins | 23 | hired hand | Laborer | Virginia |
| 35 | Howard L Johnson | 38 | head | Laborer | West Virginia |
| 36 | Grey E Johnson | 33 | wife | — | Virginia |
| 37 | June L Johnson | 14 | daughter | — | West Virginia |
| 38 | William G Johnson | 12 | son | — | West Virginia |
| 39 | Barbara A Johnson | 8 | daughter | — | West Virginia |
| 40 | Polly J Johnson | 5 | daughter | — | Virginia |
Related Census Records
Pedigree Summary
Robert
Gen 1 · 3 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)