MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jefferson-County, Georgia
Our Model Tree links this Mary Irwin across the 1930 and 1940 US Censuses in Jefferson-County, Georgia (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 6-person household.
Age 13
b. ~1927
Female
Daughter
Born: Georgia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jefferson-County, Georgia |
| Surname | Irwin |
| Given Name | Mary Francis |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Alexander |
| 1935 Residence (County) | Jefferson |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Gr 8 |
| 1935 Residence | Same house |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Township / Ward | Alexander |
| Est. Birth Year | ~1927 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Irwin | Daughter | — | 13 | ~1927 |
| Eunice Irwin | Daughter | — | 19 | ~1921 |
| Jennie Irwin | Spouse | — | 43 | ~1897 |
| James Irwin | Son | — | 17 | ~1923 |
| Mr Irwin | Head | — | 44 | ~1896 |
| William Irwin | Son | — | 9 | ~1931 |
Census Appearances
1930
Jefferson, Georgia
Daughter, age 4
Jefferson, Georgia · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Georgia |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Georgia |
| Occupation | none |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Jefferson-County, Georgia
Daughter, age 13
Jefferson-County, Georgia · implied b. ~1927 — 6 household members
| Surname | Irwin |
| Given Name | Mary Francis |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Georgia |
| 1935 Residence (City) | Alexander |
| 1935 Residence (County) | Jefferson |
| Class of Worker | 0 |
| Highest Grade | Gr 8 |
| 1935 Residence | Same house |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Irwin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Irwin
Daughter · 1940 · age 13 · b. ~1927 · Georgia
★ You are viewing this record
Sibling
Eunice Irwin
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Irwin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Irwin
Sibling · 1940 · age 9
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 — Jefferson-County, Georgia
Open full size
1940 US Federal Census — Jefferson-County, Georgia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00687-00648)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Watson Jones | 30 | Head | Farm Hand | Georgia |
| 2 | Florence Jones | 31 | Wife | — | Georgia |
| 3 | Alice Mae Jones | 13 | daughter | — | Georgia |
| 4 | Lou Ella Jones | 10 | daughter | — | Georgia |
| 5 | Ida Bell Jones | 6 | daughter | — | Georgia |
| 6 | Mosell Jones | 4 | daughter | — | Georgia |
| 7 | Alice Gardner | 30 | Head | Farm Hand | Georgia |
| 8 | Willie James Gardner | 9 | son | — | Georgia |
| 9 | Althus Gardner | 7 | daughter | — | Georgia |
| 10 | Lindberg Gardner | 5 | son | — | Georgia |
| 11 | Roger B. Gardner | 3 | son | — | Georgia |
| 12 | Arley Jane Gardner | 2 | daughter | — | Georgia |
| 13 | Fannie L. Patterson | 9 | Niece | — | Georgia |
| 14 | Susie B. Patterson | 3 | Niece | — | Georgia |
| 15 | Annie L. Irving | 40 | Head | Farm Hand | Georgia |
| 16 | Dawson Irving | 14 | son | — | Georgia |
| 17 | Robert Lee Irving | 16 | son | — | Georgia |
| 18 | Jacob Irving | 22 | son | Farm Hand | Georgia |
| 19 | Mattie Irving | 23 | daughter in law | — | Georgia |
| 20 | Mr. J. O. Irwin | 44 | Head | Farmer | Georgia |
| 21 | Jennie Mae Irwin | 43 | wife | — | Georgia |
| 22 | Eunice C. Irwin | 19 | daughter | — | Georgia |
| 23 | James Irwin | 17 | son | — | Georgia |
| 24 | Mary Francis Irwin THIS PERSON | 13 | daughter | — | Georgia |
| 25 | William P. Irwin | 9 | son | — | Georgia |
| 26 | Miss Elizabeth Holt | 65 | Head | — | Georgia |
| 27 | William Lowery | 49 | Head | Farmer | Georgia |
| 28 | Viola Lowery | 38 | wife | — | Georgia |
| 29 | Fannie Lowery | 19 | daughter | — | Georgia |
| 30 | Charlie Lowery | 17 | son | — | Georgia |
| 31 | Marie Lowery | 14 | daughter | — | Georgia |
| 32 | Alex Lowery | 11 | son | — | Georgia |
| 33 | William T. Lowery | 8 | son | — | Georgia |
| 34 | Margaret Lowery | 6 | daughter | — | Georgia |
| 35 | Eloise Mcbride | 17 | Nephew | Farm Hand | Georgia |
| 36 | Charlie M. Hatcher | 4 | son | — | Georgia |
| 37 | W. J. Moxley | 80 | Head | — | Georgia |
| 38 | Callie Moxley | 78 | wife | — | Georgia |
| 39 | Mrs. W. J. Ivey | 70 | Head | Farmer | Georgia |
| 40 | James Ivey | 44 | son | Farm Hand | Georgia |
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)