MH
Mary Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lafayette-County, Louisiana
Our Model Tree links this Mary Harmon across the 1930 and 1940 US Censuses in Lafayette-County, Louisiana (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lafayette-County, Louisiana |
| Surname | Harmon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 2 |
| 1935 Residence (County) | Lafayette |
| Additional Details | |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Ward 2 |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mabel Harmon | Daughter | — | 17 | ~1923 |
| Ueille Harmon | Daughter | — | 19 | ~1921 |
| Mary Harmon | Daughter | — | 13 | ~1927 |
| Willie Harmon | Head | — | 40 | ~1900 |
| Edward Harmon | Son | — | 10 | ~1930 |
| Morris Harmon | Son | — | 20 | ~1920 |
| M Harmon | Son | — | 12 | ~1928 |
| Eastina Harmon | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Lafayette, Louisiana
Daughter, age 4
Lafayette, Louisiana · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Lafayette-County, Louisiana
Daughter, age 13
Lafayette-County, Louisiana · implied b. ~1927 — 8 household members
| Surname | Harmon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 2 |
| 1935 Residence (County) | Lafayette |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Harmon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harmon
Daughter · 1940 · age 13 · b. ~1927 · Louisiana
★ You are viewing this record
Sibling
Ueille Harmon
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Harmon
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Harmon
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Harmon
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
M Harmon
Sibling · 1940 · age 12
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 — Lafayette-County, Louisiana
Open full size
1940 US Federal Census — Lafayette-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01409-00172)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Winfred Linden | 16 | Son | Laborer | Louisiana |
| 2 | Eurema Linden | 13 | Daughter | — | Louisiana |
| 3 | Mabel Linden | 12 | Daughter | — | Louisiana |
| 4 | Isaac Harmon | 42 | Head | Farmer | Louisiana |
| 5 | Laura Harmon | 38 | Wife | — | Louisiana |
| 6 | Willie Harmon | 40 | Head | Farmer | Louisiana |
| 7 | Eastina Harmon | 38 | Wife | — | Louisiana |
| 8 | Morris Harmon | 20 | Son | Laborer | Louisiana |
| 9 | Mabel Harmon | 17 | Daughter | — | Louisiana |
| 10 | M. C. Harmon | 12 | Son | — | Louisiana |
| 11 | Edward Harmon | 10 | Son | — | Louisiana |
| 12 | Mary Harmon THIS PERSON | 13 | Daughter | — | Louisiana |
| 13 | Ueille Harmon | 19 | Daughter | — | Louisiana |
| 14 | Mellian Broussard | 75 | Head | Farmer | Louisiana |
| 15 | Mina Broussard | 15 | Grandson | Laborer | Louisiana |
| 16 | Romaine Broussard | 45 | Head | Farmer | Louisiana |
| 17 | Louise Broussard | 39 | Wife | — | Louisiana |
| 18 | Artemine Broussard | 16 | Son | Laborer | Louisiana |
| 19 | John Broussard | 14 | Son | Laborer | Louisiana |
| 20 | Mertle Broussard | 11 | Daughter | — | Louisiana |
| 21 | Bernice Broussard | 9 | Daughter | — | Louisiana |
| 22 | Gilbert Broussard | 6 | Son | — | Louisiana |
| 23 | Lurlene Broussard | 4 | Daughter | — | Louisiana |
| 24 | Narris Broussard | 2 | Son | — | Louisiana |
| 25 | Sidney Broussard | 39 | Head | Farmer | Louisiana |
| 26 | Odelia Broussard | 26 | Wife | — | Louisiana |
| 27 | Sylius Broussard | 14 | Son | — | Louisiana |
| 28 | Lorina Broussard | 3 | Daughter | — | Louisiana |
| 29 | Clarence Broussard | 1 | Son | — | Louisiana |
| 30 | Alice Broussard | 5 | Niece | — | Louisiana |
| 31 | Alfred Broussard | 12 | Nephew | — | Louisiana |
| 32 | Albert Moses | 60 | Head | Farmer | Louisiana |
| 33 | Claudet Felix Moses | 17 | Nephew | Laborer | Louisiana |
| 34 | Lucille Moses | 20 | Neice | — | Louisiana |
| 35 | Jessie Lee Montgomery | 3 | Granddaughter | — | Louisiana |
| 36 | Julius Cruidue | 71 | Head | Farmer | Louisiana |
| 37 | Mathilde Cruidue | 65 | Wife | — | Louisiana |
| 38 | Martin A. J. Cruidue | 10 | Grandson | — | Louisiana |
| 39 | Dorothy M. Babcineaux | 4 | Granddaughter | — | Louisiana |
| 40 | Morris Gumbs | 18 | Hired Hand | Laborer | Louisiana |
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)