JN
John Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this John Nelson across the 1920, 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Nelson |
| Given Name | John M. III |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | C 3 |
| 1935 Residence | Maryland |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Election District 3 |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Nelson | Head | — | 57 | ~1883 |
| Thomas Bourne | Other | — | 40 | ~1900 |
| Blanche Bourne | Other | — | 40 | ~1900 |
| Fannie Ritchie | Other | — | 69 | ~1871 |
| John Nelson | Son | — | 21 | ~1919 |
| Ellen Nelson | Spouse | — | 53 | ~1887 |
Census Appearances
1920
None, Maryland
Son, age 1
None, Maryland · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | John M Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Baltimore-County, Maryland
Son, age 21
Baltimore-County, Maryland · implied b. ~1919 — 6 household members
| Surname | Nelson |
| Given Name | John M. III |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Highest Grade | C 3 |
| 1935 Residence | Maryland |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 John Nelson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Nelson (~0.92 confidence) and father John Nelson (~0.92 confidence) and father John Nelson (~0.92 confidence) and mother Ellen Nelson (~0.92 confidence) and mother Eleanor Nelson (~0.92 confidence) and mother Ellen Nelson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Nelson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Nelson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Nelson
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Ellen Nelson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Eleanor Nelson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Ellen Nelson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Nelson
Son · 1940 · age 21 · b. ~1919 · 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-t0627-01503-00851)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Horace W Harrison | 19 | Son | — | Maryland |
| 42 | Mary Day Robinson | 38 | Servant | Cook | S. Carolina |
| 43 | Matthew S. Atkinson | 59 | Head | Agent | Maryland |
| 44 | Jennie C Atkinson | 44 | Wife | — | Alabama |
| 45 | Matthew S. Ii Atkinson | 14 | Son | — | Maryland |
| 46 | Clara Alton | 45 | Servant | Cook | Maryland |
| 47 | Olav H Peterson | 35 | Head | Chauffeur | Norway |
| 48 | Phyllis C Peterson | 33 | Wife | — | Scotland |
| 49 | Phyllis C Peterson | 4 | Daughter | — | New York |
| 50 | Arnold Peterson | 2 | Son | — | Maryland |
| 51 | Norman Boston | 42 | Head | Mechanic | Maryland |
| 52 | Elsie Boston | 37 | Wife | — | Maryland |
| 53 | Bessie Boston | 18 | Daughter | New Worker | Maryland |
| 54 | Norma Boston | 7 | Daughter | — | Maryland |
| 55 | Patsy Boston | 5 | Daughter | — | Maryland |
| 56 | Charles V. Carey | 44 | Head | Manager | Maryland |
| 57 | Ida M. Carey | 43 | Wife | — | Maryland |
| 58 | Charles V. Jr. Carey | 16 | Son | Clerk | Maryland |
| 59 | Harvey Edward Carey | 11 | Son | — | Maryland |
| 60 | John M. Jr. Nelson | 57 | Head | Merchant | Maryland |
| 61 | Ellen M. Nelson | 53 | Wife | — | Pennsylvania |
| 62 | John M. Iii Nelson THIS PERSON | 21 | Son | — | Rhode Island |
| 63 | Fannie B Ritchie | 69 | Servant | Maid | Virginia |
| 64 | Thomas Bourne | 40 | Servant | Butler | Maryland |
| 65 | Blanche Bourne | 40 | Servant | Cook | Maryland |
| 66 | Murray Winkler | 38 | Head | — | Massachusetts |
| 67 | Ross Winkler | 13 | Son | — | Massachusetts |
| 68 | Gordon C Hartley | 35 | Head | Manufacturer | Massachusetts |
| 69 | Elizabeth Hartley | 33 | Wife | — | Maryland |
| 70 | Elizabeth Hartley | 9 | Daughter | — | England |
| 71 | Douglas Hartley | 6 | Son | — | England |
| 72 | Milton Brown | 36 | Head | — | Maryland |
| 73 | Ruth Brown | 35 | Wife | — | Maryland |
| 74 | Alice Brown | 5 | Daughter | — | Maryland |
| 75 | Milton, Jr. Brown | 3 | Son | — | Maryland |
| 76 | Harold B Cahn | 41 | Head | Stock Broker | Maryland |
| 77 | Doris Cahn | 34 | Wife | Lawyer | Missouri |
| 78 | Elena Ackerman | 15 | Daughter | — | Missouri |
| 79 | Margaret Bryan | 28 | Servant | Cook | Maryland |
| 80 | Frederick Kutch | 19 | Servant | Gardener | Maryland |
Pedigree Summary
John
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)