MS
Mary Strong — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Jefferson, Alabama
Our Model Tree links this Mary Strong across the 1930 and 1940 US Censuses in Jefferson, Alabama (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 10
b. ~1920
Female
Daughter
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Jefferson, Alabama |
| Surname | Strong |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Est. Birth Year | ~1920 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Strong | Daughter | — | 10 | ~1920 |
| Lula Strong | Spouse | — | 36 | ~1894 |
| Lide Strong | Daughter | — | 16 | ~1914 |
| Lillie Strong | Daughter | — | 18 | ~1912 |
| James Strong | Son | — | 14 | ~1916 |
| Robert Strong | Son | — | 12 | ~1918 |
| James Strong | Head | — | 42 | ~1888 |
Census Appearances
1930
Jefferson, Alabama
Daughter, age 10
Jefferson, Alabama · implied b. ~1920 — 7 household members
| Surname | Strong |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1940
Jefferson-County, Alabama
Other, age 20
Jefferson-County, Alabama · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Strong |
| Given Name | Mamie |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Alabama |
| 1935 Residence (City) | Montgomery |
| Occupation | maid |
| Industry | private home |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Alabama |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Strong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Strong
Daughter · 1930 · age 10 · b. ~1920 · Alabama
★ You are viewing this record
Sibling
Lide Strong
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillie Strong
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Strong
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Strong
Sibling · 1930 · age 14
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 — Jefferson, Alabama
Open full size
1930 US Federal Census — Jefferson, Alabama
Page Contents
50 people indexed on this census page (ia:1930:15thcensus7usce:0645)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George H Cason | 44 | Head | Farmer | Alabama |
| 2 | Lula Cason | 42 | Wife | — | Alabama |
| 3 | George Jr Cason | 12 | Son | Farm Laborer | Alabama |
| 4 | James Strong | 66 | Head | Farmer | Alabama |
| 5 | Sallie Strong | 30 | Daughter | Farmer | Alabama |
| 6 | Bessie Strong | 20 | Daughter | — | Alabama |
| 7 | John Strong | 18 | Son | — | Alabama |
| 8 | George Strong | 16 | Son | — | Alabama |
| 9 | John Strong | 62 | Head | Farmer | Alabama |
| 10 | Lula Strong | 42 | Wife | — | Alabama |
| 11 | Lillie Strong | 22 | Daughter | — | Alabama |
| 12 | Lide Strong | 20 | Daughter | — | Alabama |
| 13 | James Strong | 56 | Head | Farmer | Alabama |
| 14 | Florence Strong | 47 | Wife | — | Alabama |
| 15 | James Jr Strong | 23 | Son | Farmer | Alabama |
| 16 | Robert Strong | 21 | Son | Farmer | Alabama |
| 17 | Mary Strong | 18 | Daughter | — | Alabama |
| 18 | John Strong | 16 | Son | — | Alabama |
| 19 | William Strong | 14 | Son | — | Alabama |
| 20 | Lula Strong | 12 | Daughter | — | Alabama |
| 21 | Annie Strong | 10 | Daughter | — | Alabama |
| 22 | George Strong | 8 | Son | — | Alabama |
| 23 | Bessie Strong | 6 | Daughter | — | Alabama |
| 24 | John Strong | 4 | Son | — | Alabama |
| 25 | Lillie Strong | 2 | Daughter | — | Alabama |
| 26 | James Strong | 42 | Head | Farmer | Alabama |
| 27 | Lula Strong | 36 | Wife | — | Alabama |
| 28 | Lillie Strong | 18 | Daughter | — | Alabama |
| 29 | Lide Strong | 16 | Daughter | — | Alabama |
| 30 | James Jr Strong | 14 | Son | — | Alabama |
| 31 | Robert Strong | 12 | Son | — | Alabama |
| 32 | Mary Strong THIS PERSON | 10 | Daughter | — | Alabama |
| 33 | John Strong | 44 | Head | Farmer | Alabama |
| 34 | Lula Strong | 38 | Wife | — | Alabama |
| 35 | Lillie Strong | 12 | Daughter | — | Alabama |
| 36 | Lide Strong | 10 | Daughter | — | Alabama |
| 37 | James Strong | 8 | Son | — | Alabama |
| 38 | Robert Strong | 6 | Son | — | Alabama |
| 39 | Mary Strong | 4 | Daughter | — | Alabama |
| 40 | John Strong | 2 | Son | — | Alabama |
| 41 | Lula Strong | 1 | Daughter | — | Alabama |
| 42 | James Strong | 54 | Head | Farmer | Alabama |
| 43 | Lula Strong | 48 | Wife | — | Alabama |
| 44 | Lillie Strong | 22 | Daughter | — | Alabama |
| 45 | Lide Strong | 20 | Daughter | — | Alabama |
| 46 | James Jr Strong | 18 | Son | — | Alabama |
| 47 | Robert Strong | 16 | Son | — | Alabama |
| 48 | Mary Strong | 14 | Daughter | — | Alabama |
| 49 | John Strong | 12 | Son | — | Alabama |
| 50 | Lula Strong | 10 | Daughter | — | Alabama |
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)