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Mary Leonard — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Clay, Missouri
Our Model Tree links this Mary Leonard across the 1920 and 1930 US Censuses in Clay, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 12-person household.
Age 11
b. ~1919
Female
Daughter
Born: Missouri
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Clay, Missouri |
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Gallatin Township |
| Est. Birth Year | ~1919 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thelma Leonard | Daughter | — | 3 | ~1927 |
| Barbara Leonard | Daughter | — | 5 | ~1925 |
| Mildred Leonard | Daughter | — | 9 | ~1921 |
| Doris Leonard | Daughter | — | 13 | ~1917 |
| Genevieve Leonard | Daughter | — | 17 | ~1913 |
| Ruth Leonard | Daughter | — | 16 | ~1914 |
| Ella Leonard | Daughter | — | 20 | ~1910 |
| Mary Leonard | Daughter | — | 11 | ~1919 |
| Oliver Leonard | Head | — | 43 | ~1887 |
| Evelyn Leonard | Other | — | 34 | ~1896 |
| Alvin Leonard | Son | — | 6 | ~1924 |
| William Leonard | Son | — | 15 | ~1915 |
Census Appearances
1920
Clay, Missouri
Daughter, age 1
Clay, Missouri · implied b. ~1919 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Clay, Missouri
Daughter, age 11
Clay, Missouri · implied b. ~1919 — 12 household members
| Surname | Leonard |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Leonard across 2 US Census years (1920 and 1930) in Clay, Missouri, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Leonard
Daughter · 1930 · age 11 · b. ~1919 · Missouri
★ You are viewing this record
Sibling
Ella Leonard
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Leonard
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Leonard
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Leonard
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevieve Leonard
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Leonard
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Leonard
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Leonard
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alvin Leonard
Sibling · 1930 · 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
1930 US Federal Census — Clay, Missouri
Open full size
1930 US Federal Census — Clay, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1183:0248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Alice Heald | 54 | Wife-H | — | Illinois |
| 52 | James W Heald | 25 | Son | Salesman | Illinois |
| 53 | Elsie C Heald | 23 | Daughter-in-law | — | Iowa |
| 54 | Merlyn Heald | 4 | Grand daughter | — | Illinois |
| 55 | James E Heald | 1 | Grand son | — | Missouri |
| 56 | Lydia Stanford | 86 | Mother-in-law | — | Maine |
| 57 | Lolyder L Barr | 44 | Head | Carpenter | Kansas |
| 58 | Vera G Barr | 36 | Wife-H | — | Kansas |
| 59 | William S Barnes | 75 | Head | Laborer | Missouri |
| 60 | Lottie Barnes | 61 | Wife-H | — | Missouri |
| 61 | Vernon W Barry | 43 | Head | Clerk-Sales | Kansas |
| 62 | Nell B Barry | 42 | Wife-H | — | Kansas |
| 63 | Harold S Barry | 19 | Son | Apprentice | Kansas |
| 64 | M Lorraine Barry | 14 | Daughter | — | Missouri |
| 65 | Hugh S Barry | 7 | Son | — | Missouri |
| 66 | Mary J Parsons | 84 | Mother-in-law | — | Ohio |
| 67 | Lynn K Witzel | 27 | Head | Carpenter | Illinois |
| 68 | Madeleine Witzel | 27 | Wife-H | — | Nebraska |
| 69 | Lynn K Jr Witzel | 5 | Son | — | Missouri |
| 70 | Louise M Witzel | 1 | Son | — | Missouri |
| 71 | Ira Weber | 45 | Head | Foreman | Missouri |
| 72 | Viola Weber | 42 | Wife-H | — | Missouri |
| 73 | Emery Weber | 21 | Son | Laborer | Kansas |
| 74 | May Weber | 19 | Daughter-in-law | Packer | Texas |
| 75 | Oliver W Leonard | 43 | Head | Contractor | Missouri |
| 76 | Evelyn Leonard | 34 | Wife-H | — | Missouri |
| 77 | Ella M Leonard | 20 | Daughter | Telegraph Operator | Oklahoma |
| 78 | Genevieve Leonard | 17 | Daughter | File And Typing Clerk | Oklahoma |
| 79 | Ruth Leonard | 16 | Daughter | — | Oklahoma |
| 80 | William Leonard | 15 | Son | — | Missouri |
| 81 | Doris Leonard | 13 | Daughter | — | Missouri |
| 82 | Mary Leonard THIS PERSON | 11 | Daughter | — | Missouri |
| 83 | Mildred Leonard | 9 | Daughter | — | Missouri |
| 84 | Alvin Leonard | 6 | Son | — | Missouri |
| 85 | Barbara Leonard | 5 | Daughter | — | Missouri |
| 86 | Thelma Leonard | 3 | Daughter | — | Missouri |
| 87 | Archie Dale | 40 | Head | Mechanic | Missouri |
| 88 | Katie Dale | 37 | Wife-H | — | Missouri |
| 89 | Alta L Dale | 16 | Daughter | — | Missouri |
| 90 | Evelyn Dale | 12 | Daughter | — | Arizona |
| 91 | Jean Dale | 10 | Daughter | — | Missouri |
| 92 | Oscar Allen | 41 | Head | Garage Proprietor | Alabama |
| 93 | Ethel B Allen | 37 | Wife-H | — | Indiana |
| 94 | Donald Allen | 11 | Son | — | Missouri |
| 95 | Clifton Allen | 10 | Son | — | Missouri |
| 96 | Joan Allen | 7 | Daughter | — | Missouri |
| 97 | Bonnie M Allen | 4 | Daughter | — | Missouri |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)