NC
Nellie Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calvert-County, Maryland
Our Model Tree links this Nellie Clark across the 1930 and 1940 US Censuses in Calvert-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 10-person household.
Age 49
b. ~1891
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calvert-County, Maryland |
| Surname | Clark |
| Given Name | Nellie N. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Howells |
| 1935 Residence (County) | Calvert |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Howells |
| Est. Birth Year | ~1891 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Nellie | Age | Birth yr |
|---|---|---|---|---|
| Marva Clark | Daughter | — | 1 | ~1939 |
| Nettie Clark | Daughter | — | 4 | ~1936 |
| Carolyn Clark | Daughter | — | 9 | ~1931 |
| Vivian Clark | Daughter | — | 11 | ~1929 |
| Dean Clark | Daughter | — | 6 | ~1934 |
| J Clark | Daughter | — | 8 | ~1932 |
| Henry Clark | Head | — | 49 | ~1891 |
| Maurice Clark | Son | — | 16 | ~1924 |
| James Clark | Son | — | 12 | ~1928 |
| Nellie Clark | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Calvert, Maryland
Spouse, age 37
Calvert, Maryland · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Nettie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Calvert-County, Maryland
Spouse, age 49
Calvert-County, Maryland · implied b. ~1891 — 10 household members
| Surname | Clark |
| Given Name | Nellie N. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Howells |
| 1935 Residence (County) | Calvert |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Nellie Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Nellie Clark
Spouse · 1940 · age 49 · b. ~1891 · 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 — Calvert-County, Maryland
Open full size
1940 US Federal Census — Calvert-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01543-00027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barbara L. Beam | 4 | Daughter | — | Maryland |
| 42 | Ralph Beam | 2 | Son | — | Maryland |
| 43 | Frances Beam | 0 | Daughter | — | Maryland |
| 44 | Louis Beam | 68 | Father | — | Maryland |
| 45 | Ethan D. Johnson | 55 | Head | Waterman | Maryland |
| 46 | Amelia Z. Johnson | 55 | Wife | — | Maryland |
| 47 | Henry Clark | 49 | Head | Waterman | Maryland |
| 48 | Nellie N. Clark THIS PERSON | 49 | Wife | — | Maryland |
| 49 | James H. Clark | 12 | Son | Waterman | Maryland |
| 50 | Maurice G. Clark | 16 | Son | Laborer | Maryland |
| 51 | Vivian W. Clark | 11 | Daughter | — | Maryland |
| 52 | Carolyn L. Clark | 9 | Daughter | — | Maryland |
| 53 | J. Ernestine Clark | 8 | Daughter | — | Maryland |
| 54 | Dean C. Clark | 6 | Daughter | — | Maryland |
| 55 | Nettie E. Clark | 4 | Daughter | — | Maryland |
| 56 | Marva A. Clark | 1 | Daughter | — | Maryland |
| 57 | William Curtis | 75 | Head | — | Maryland |
| 58 | Liza Curtis | 67 | Wife | — | Maryland |
| 59 | Martha Howard | 48 | Head | Laundress | Maryland |
| 60 | Alexander Gross | 57 | Head | — | Maryland |
| 61 | Florence Gross | 53 | Wife | — | Maryland |
| 62 | Joseph Gross | 28 | Son | Laborer | Maryland |
| 63 | Austin Gross | 18 | Son | Waterman | Maryland |
| 64 | Beatrice Gross | 17 | Daughter | Servant | Maryland |
| 65 | Beatrice Gross | 14 | Daughter | — | Maryland |
| 66 | George W. Hutchins | 25 | Head | Shucker | Maryland |
| 67 | Edith Hutchins | 22 | Wife | Shucker | Maryland |
| 68 | Mary E. Hutchins | 3 | Daughter | — | Maryland |
| 69 | Henrietta Hutchins | 1 | Daughter | — | Maryland |
| 70 | Earl W. Barrett | 27 | Head | Watchman | Maryland |
| 71 | Myrtle Barrett | 21 | Wife | — | Maryland |
| 72 | Dorothy Barrett | 5 | Daughter | — | Maryland |
| 73 | Earlene Barrett | 1 | Daughter | — | Maryland |
| 74 | James W. Hungerford | 66 | Head | Carpenter | Maryland |
| 75 | Emma Hungerford | 66 | Wife | — | Maryland |
| 76 | Edward S. Pardee | 68 | Brother-in-law | Laborer | Maryland |
| 77 | Andrew M. Wilks | 58 | Head | Waterman | Maryland |
| 78 | Ida Wilks | 56 | Wife | — | Maryland |
| 79 | Carroll Wilks | 15 | Son | — | Maryland |
| 80 | G. Gunther Waller | 28 | Head | — | Rhode Island |
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)