MS
Mary Sparks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Mary Sparks across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Female
Daughter
Born: Texas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Sparks |
| Given Name | Mary Lou |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hopkins |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
| Township / Ward | Supervisorial Division No 1 Pt Block Nos |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Sparks | Daughter | — | 12 | ~1928 |
| Patsy Sparks | Daughter | — | 1 | ~1939 |
| Mabell Sparks | Spouse | — | 32 | ~1908 |
| Lois Sparks | Daughter | — | 8 | ~1932 |
| James Sparks | Son | — | 6 | ~1934 |
| Joyce Sparks | Daughter | — | 10 | ~1930 |
| James Sparks | Head | — | 37 | ~1903 |
Census Appearances
1930
Maricopa, Arizona
Other, age 1
Maricopa, Arizona · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sparks |
| Given Name | Mary |
| Relationship to Head | Dau |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Texas |
| Father's Birthplace | Oklahoma |
| Mother's Birthplace | Arkansas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
1940
Maricopa-County, Arizona
Daughter, age 12
Maricopa-County, Arizona · implied b. ~1928 — 7 household members
| Surname | Sparks |
| Given Name | Mary Lou |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Texas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hopkins |
| Highest Grade | No 5 |
| 1935 Residence | Texas |
| Birth State | Texas |
| Birth Country | United States |
| Birthplace (normalized) | texas |
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 12 · b. ~1928 · Arizona
★ You are viewing this record
Sibling
Joyce Sparks
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lois Sparks
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patsy Sparks
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sparks
Sibling · 1940 · age 6
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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00107-00106)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lillian Gardner | 33 | Wife | 13 | Arkansas |
| 42 | Pauline Walker | 9 | Daughter | — | Oklahoma |
| 43 | Paul Jr Walker | 8 | Son | — | Oklahoma |
| 44 | Johnnie E Coyle | 24 | Head | Owner And Operator | Texas |
| 45 | June Coyle | 18 | Wife | — | Arizona |
| 46 | Carolyn Coyle | 2 | Daughter | — | Arizona |
| 47 | Ellison M Goodson | 55 | Head | Owner And Operator | Texas |
| 48 | Kathryn Goodson | 55 | Wife | — | Ohio |
| 49 | Ona V Arbuckle | 49 | Head | Common Laborer | Texas |
| 50 | Emma Arbuckle | 37 | Wife | — | Texas |
| 51 | Winona Arbuckle | 12 | daughter | — | Oklahoma |
| 52 | James M Arbuckle | 10 | son | — | Oklahoma |
| 53 | Willis E Arbuckle | 8 | son | — | Oklahoma |
| 54 | Jo Ella Arbuckle | 7 | daughter | — | Oklahoma |
| 55 | Guy C Rhodes | 64 | Head | Owner And Operator | North Carolina |
| 56 | Mary A Rhodes | 61 | Wife | — | North Carolina |
| 57 | Leslie Rhodes | 35 | Son | Assistant Operator | North Carolina |
| 58 | James L King | 56 | Head | Common Laborer | Tennessee |
| 59 | Ilona Ann King | 46 | Wife | — | Arkansas |
| 60 | Curtis King | 21 | son | Common Laborer | Arkansas |
| 61 | Ruth King | 14 | daughter | — | Wyoming |
| 62 | Mildred King | 3 | daughter | — | Arizona |
| 63 | Arland Ray Ashford | 22 | Head | Common Laborer | Oklahoma |
| 64 | Malina June Ashford | 18 | Wife | — | Oklahoma |
| 65 | Connall Ray Ashford | 0 | son | — | Oklahoma |
| 66 | Clara Swanson | 48 | Head | — | Illinois |
| 67 | Ruth Fox | 27 | daughter | — | Iowa |
| 68 | Melvin Swanson | 15 | son | New Worker | Iowa |
| 69 | James M Sparks | 37 | Head | Common Laborer | Texas |
| 70 | Mabell Sparks | 32 | Wife | — | Texas |
| 71 | Mary Lou Sparks THIS PERSON | 12 | daughter | — | Texas |
| 72 | Joyce Marie Sparks | 10 | daughter | — | Texas |
| 73 | Lois Jean Sparks | 8 | daughter | — | Texas |
| 74 | James W Sparks | 6 | son | — | Texas |
| 75 | Patsy Sparks | 1 | daughter | — | Texas |
| 76 | Mary Tucker | 42 | Head | — | Texas |
| 77 | Cecile Tucker | 22 | son | Common Laborer | Texas |
| 78 | Calvin Tucker | 20 | son | Common Laborer | Texas |
| 79 | James O Coffey | 37 | Head | Common Laborer | Arkansas |
| 80 | Johnnie Coffey | 38 | Wife | Servant | 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)