MN
Mary Nelson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Nelson across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 7-person household.
Age 40
b. ~1900
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore city |
| Additional Details | |
| Occupation | Housewife |
| Industry | At home |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Housewife |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1900 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Nelson | Daughter | — | 7 | ~1933 |
| Frank Nelson | Head | — | 51 | ~1889 |
| Frank Nelson | Son | — | 6 | ~1934 |
| George Nelson | Son | — | 18 | ~1922 |
| James Nelson | Son | — | 8 | ~1932 |
| Charles Nelson | Son | — | 11 | ~1929 |
| Mary Nelson | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 19
Baltimore, Maryland · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laundress |
| Industry | Working Out |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 30
Baltimore, Maryland · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 18 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 40
Baltimore-City-County, Maryland · implied b. ~1900 — 7 household members
| Surname | Nelson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore city |
| Occupation | Housewife |
| Industry | At home |
| Income (1939) | 0 |
| 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 Mary Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Nelson
Spouse · 1940 · age 40 · b. ~1900 · Maryland
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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-t0627-01526-00619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Nathan Jackson | 14 | Son | — | Maryland |
| 42 | Belle Jackson | 2 | Daughter | — | Maryland |
| 43 | Charles Guilther | 29 | Brother | — | Maryland |
| 44 | John Edwards | 45 | Head | Laborer | South Carolina |
| 45 | Charles Long | 66 | Lodger | Hodcarrier | North Carolina |
| 46 | George Brown | 57 | Head | Laborer | Maryland |
| 47 | Ana Carter | 44 | Lodger | Laborer | Alabama |
| 48 | Roman Carter | 16 | Lodger Son | General Housework | Maryland |
| 49 | James Barnes | 48 | Head | Delivery Boy | Maryland |
| 50 | Virginia Huchins | 31 | Head | Baker | Maryland |
| 51 | Frank Huchins | 53 | Father | Maid | Maryland |
| 52 | Doris Huchins | 17 | Daughter | New Worker | Maryland |
| 53 | Frank Huchins | 23 | Son | Attendant | Maryland |
| 54 | Winifred Huchins | 5 | Daughter | — | Maryland |
| 55 | Frank Jackson | 41 | Head | — | Maryland |
| 56 | Elvira Jackson | 38 | Wife | Housewife | Maryland |
| 57 | Louise Jackson | 19 | Daughter | Maid | Maryland |
| 58 | Paul Jackson | 16 | Son | — | Maryland |
| 59 | Thomas Jackson | 14 | Son | — | Maryland |
| 60 | Rose Lee Jackson | 11 | Daughter | — | Maryland |
| 61 | Robert Jackson | 9 | Son | — | Maryland |
| 62 | Barbara Jane Jackson | 7 | Daughter | — | Maryland |
| 63 | Clarence Jackson | 5 | Son | — | Maryland |
| 64 | Gilbert Jackson | 4 | Son | — | Maryland |
| 65 | John Rice | 39 | Head | Porter | Virginia |
| 66 | Ruby Rice | 34 | Wife | Cook | Virginia |
| 67 | Albertine Rice | 13 | Daughter | — | D.C. |
| 68 | Zelda Rice | 12 | Daughter | — | Maryland |
| 69 | John Jr. Rice | 9 | Son | — | Virginia |
| 70 | Julia Brooks | 63 | Cousin | — | Virginia |
| 71 | Lula Young | 45 | Head | Operator | Maryland |
| 72 | Frank Nelson | 51 | Head | Laborer | Maryland |
| 73 | Mary Nelson THIS PERSON | 40 | Wife | Housewife | Maryland |
| 74 | George A. Nelson | 18 | Son | C.C.C. Camp | Maryland |
| 75 | Charles Nelson | 11 | Son | — | Maryland |
| 76 | James Nelson | 8 | Son | — | Maryland |
| 77 | Mary Nelson | 7 | Daughter | — | Maryland |
| 78 | Frank Nelson | 6 | Son | — | Maryland |
| 79 | William H. Weaver | 66 | Head | — | Maryland |
| 80 | Irene Albert | 67 | Sister | — | Maryland |
Related Census Records
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)