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Mary Warner — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this Mary Warner across the 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Warner |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | District No. 9 |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Highest Grade | G-5 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | District No 9 |
| Est. Birth Year | ~1928 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Olive Warner | Daughter | — | 10 | ~1930 |
| Mary Warner | Daughter | — | 12 | ~1928 |
| Ruby Warner | Daughter | — | 15 | ~1925 |
| Clara Warner | Daughter | — | 13 | ~1927 |
| Nellie Warner | Daughter | — | 19 | ~1921 |
| Uriah Warner | Head | — | 45 | ~1895 |
| Albert Warner | Son | — | 8 | ~1932 |
| Roy Warner | Son | — | 21 | ~1919 |
| Charles Warner | Son | — | 20 | ~1920 |
| Marie Warner | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Carroll, Maryland
Daughter, age 1
Carroll, Maryland · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Warner |
| Given Name | Mary K. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Daughter, age 12
Carroll-County, Maryland · implied b. ~1928 — 10 household members
| Surname | Warner |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | District No. 9 |
| 1935 Residence (County) | Carroll |
| Highest Grade | G-5 |
| 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 Mary Warner across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Warner
Daughter · 1940 · age 12 · b. ~1928 · Maryland
★ You are viewing this record
Sibling
Albert Warner
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Olive Warner
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Warner
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Warner
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Warner
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Warner
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Warner
Sibling · 1940 · age 19
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 — Carroll-County, Maryland
Open full size
1940 US Federal Census — Carroll-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01544-00858)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Trueman Franklin | 30 | Head | Farmer | Maryland |
| 2 | Evelyn Franklin | 35 | Wife | Housekeeper | Maryland |
| 3 | Woodrow Franklin | 10 | Son | — | Maryland |
| 4 | James Davis | 24 | Hired Hand | Laborer | Maryland |
| 5 | B. F. Jr. Brown | 41 | Head | Mechanic | Maryland |
| 6 | Lilian E. Brown | 38 | Wife | Housekeeper | Maryland |
| 7 | B. F. Iii Brown | 16 | Son | — | Maryland |
| 8 | Lee R. Brown | 10 | Son | — | Maryland |
| 9 | George E. Krideler | 19 | Nephew | Laborer | Maryland |
| 10 | Newton S. Franklin | 44 | Head | Farmer | Maryland |
| 11 | Maude S. Franklin | 43 | Wife | Housekeeper | Maryland |
| 12 | Rosie E. Franklin | 69 | Mother | — | Maryland |
| 13 | Walter T. Franklin | 43 | Brother | Laborer | Maryland |
| 14 | Russell M. Franklin | 35 | Brother | Laborer | Maryland |
| 15 | Viola I. Franklin | 40 | Sister | Housekeeper | Maryland |
| 16 | Sherman S. Black | 43 | Head | Farmer | Maryland |
| 17 | Dorothy Ray Black | 49 | Wife | Housekeeper | Maryland |
| 18 | Thornton S. Black | 19 | Son | Farmer | Maryland |
| 19 | Leslie Ray Black | 15 | Son | — | Maryland |
| 20 | Peggy Ann Black | 8 | Daughter | — | Maryland |
| 21 | Uriah S. Warner | 45 | Head | Laborer | Maryland |
| 22 | Marie Gertrude Warner | 40 | Wife | Housekeeper | Maryland |
| 23 | Roy Sylvester Warner | 21 | Son | Forester | Maryland |
| 24 | Charles Ignatius Warner | 20 | Son | Steward | Maryland |
| 25 | Nellie Marie Warner | 19 | Daughter | — | Maryland |
| 26 | Ruby May Warner | 15 | Daughter | — | Maryland |
| 27 | Clara V. Warner | 13 | Daughter | — | Maryland |
| 28 | Mary Jane Warner THIS PERSON | 12 | Daughter | — | Maryland |
| 29 | Olive Louise Warner | 10 | Daughter | — | Maryland |
| 30 | Albert Ritchie Warner | 8 | Son | — | Maryland |
| 31 | John R. Sier | 53 | Head | Farmer | Maryland |
| 32 | Jamie V. Sier | 45 | Wife | Housekeeper | Maryland |
| 33 | Pauline Sier | 19 | Daughter | — | Maryland |
| 34 | Isabel Sier | 12 | Daughter | — | Maryland |
| 35 | Violet May Sier | 6 | Daughter | — | Maryland |
| 36 | Thomas J. Cook | 38 | Head | Farmer | Maryland |
| 37 | Beulah S. Cook | 44 | Wife | Housekeeper | Maryland |
| 38 | Mabel L. Cook | 16 | Daughter | — | Maryland |
| 39 | James Albert Cook | 14 | Son | — | 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)