MS
Mary Sparks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lucas-County, Ohio
Our Model Tree links this Mary Sparks across the 1930 and 1940 US Censuses in Lucas-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 15-person household.
Age 15
b. ~1925
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lucas-County, Ohio |
| Surname | Sparks |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Toledo |
| 1935 Residence (County) | Lucas |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Toledo |
| Est. Birth Year | ~1925 |
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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| George Sparks | Head | — | 37 | ~1903 |
| Mary Sparks | Daughter | — | 15 | ~1925 |
| Robert Sparks | Son | — | 13 | ~1927 |
| Alice Sparks | Daughter | — | 2 | ~1938 |
| Ronald Sparks | Son | — | 1 | ~1939 |
| Wanita Sparks | Daughter | — | 18 | ~1922 |
| Phyllis Sparks | Daughter | — | 4 | ~1936 |
| Jean Sparks | Daughter | — | 6 | ~1934 |
| Helen Sparks | Daughter | — | 5 | ~1935 |
| Betty Sparks | Daughter | — | 10 | ~1930 |
| George Sparks | Son | — | 16 | ~1924 |
| Donald Sparks | Other | — | 2 | ~1938 |
| Barbara Sparks | Daughter | — | 8 | ~1932 |
| Wallace Sparks | Son | — | 12 | ~1928 |
| Alice Sparks | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Lucas, Ohio
Daughter, age 5
Lucas, Ohio · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Lucas-County, Ohio
Daughter, age 15
Lucas-County, Ohio · implied b. ~1925 — 15 household members
| Surname | Sparks |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Toledo |
| 1935 Residence (County) | Lucas |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Sparks across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sparks
Daughter · 1940 · age 15 · b. ~1925 · Ohio
★ You are viewing this record
Sibling
Jean Sparks
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Sparks
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Sparks
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Sparks
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wallace Sparks
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Sparks
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Sparks
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Sparks
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wanita Sparks
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Sparks
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Sparks
Sibling · 1940 · age 10
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 — Lucas-County, Ohio
Open full size
1940 US Federal Census — Lucas-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03260-00439)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Ball | 35 | Head | Window Shade | Hungary |
| 2 | Mildred Ball | 32 | Wife | — | Ohio |
| 3 | William Libstoff | 53 | Head | Tallyman | Michigan |
| 4 | Amelia Libstoff | 55 | Wife | — | Ohio |
| 5 | Norman Libstoff | 25 | Son | Tinner | Ohio |
| 6 | William Drager | 50 | Brother-in-law | Manager Warehouse | Ohio |
| 7 | James Palmer | 28 | Head | Saw Machine Oper | Georgia |
| 8 | Ollie Palmer | 23 | Wife | — | No. Carolina |
| 9 | Nancy L. Palmer | 4 | Daughter | — | Ohio |
| 10 | Rose Marie Palmer | 3 | Daughter | — | Ohio |
| 11 | James Jr. Palmer | 1 | Son | — | Ohio |
| 12 | James Smith | 33 | Brother-in-law | Truck Driver | N. Carolina |
| 13 | James Gillam | 59 | Head | Laborer | Alabama |
| 14 | Birdie Gillam | 52 | Wife | — | Alabama |
| 15 | Frankie Fisher | 38 | Daughter | Housekeeper | Oklahoma |
| 16 | Josephine Fisher | 19 | Granddaughter | — | Ohio |
| 17 | Corrine Fisher | 17 | Granddaughter | — | Ohio |
| 18 | Carl Fisher | 17 | Grandson | — | Ohio |
| 19 | Cleo Black | 36 | Son | Laborer | Oklahoma |
| 20 | Holly Black | 27 | Daughter-in-law | — | Ohio |
| 21 | Nevalli Black | 7 | Granddaughter | — | Ohio |
| 22 | George Sparks | 37 | Head | Cloth Inspector | Tennessee |
| 23 | Alice Sparks | 36 | Wife | — | Ohio |
| 24 | Wanita Sparks | 18 | Daughter | New Worker | Ohio |
| 25 | George Jr. Sparks | 16 | Son | New Worker | Ohio |
| 26 | Mary Sparks THIS PERSON | 15 | Daughter | — | Ohio |
| 27 | Robert Sparks | 13 | Son | — | Ohio |
| 28 | Wallace Sparks | 12 | Son | — | Ohio |
| 29 | Betty Sparks | 10 | Daughter | — | Ohio |
| 30 | Barbara Ann Sparks | 8 | Daughter | — | Ohio |
| 31 | Jean Sparks | 6 | Daughter | — | Ohio |
| 32 | Helen Sparks | 5 | Daughter | — | Ohio |
| 33 | Phyllis Sparks | 4 | Daughter | — | Ohio |
| 34 | Alice Sparks | 2 | Daughter | — | Ohio |
| 35 | Ronald Sparks | 1 | Son | — | Ohio |
| 36 | Donald Sparks | 2 | Grandson | — | Ohio |
| 37 | George Feely | 59 | Head | Janitor | Missouri |
| 38 | Kathlyn Feely | 55 | Wife | — | Texas |
| 39 | Lucille Railton | 50 | Sister-in-law | Housekeeping Aide | Texas |
| 40 | Blanche Chandler | 21 | Niece | Maid | Texas |
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)