HS
Harold Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plaquemines-County, Louisiana
Our Model Tree links this Harold Smith across the 1920, 1930 and 1940 US Censuses in Plaquemines-County, Louisiana (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a son (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plaquemines-County, Louisiana |
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 10 |
| 1935 Residence (County) | Plaquemines Parish |
| Additional Details | |
| Occupation | Boat operator |
| Industry | Bar pilots |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 847 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Boat Operator |
| Township / Ward | Police Jury Ward 10 |
| Est. Birth Year | ~1915 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Margaret Smith | Daughter | — | 23 | ~1917 |
| Edna Smith | Daughter | — | 27 | ~1913 |
| Charles Smith | Head | — | 52 | ~1888 |
| Joseph Smith | Son | — | 17 | ~1923 |
| Harold Smith | Son | — | 25 | ~1915 |
| Roy Smith | Son | — | 14 | ~1926 |
| David Smith | Son | — | 3 | ~1937 |
Census Appearances
1920
Plaquemines, Louisiana
Son, age 5
Plaquemines, Louisiana · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Plaquemines, Louisiana
Son, age 15
Plaquemines, Louisiana · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Plaquemines-County, Louisiana
Son, age 25
Plaquemines-County, Louisiana · implied b. ~1915 — 7 household members
| Surname | Smith |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Police Jury Ward 10 |
| 1935 Residence (County) | Plaquemines Parish |
| Occupation | Boat operator |
| Industry | Bar pilots |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 847 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Harold Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Smith (~0.92 confidence) and father Charles Smith (~0.92 confidence) and father Charles Smith (~0.92 confidence) and mother Jennie Smith (~0.92 confidence) and mother Annie Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Smith
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Charles Smith
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Charles Smith
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Jennie Smith
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Annie Smith
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Smith
Son · 1940 · age 25 · b. ~1915 · Louisiana
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Sibling
Roy Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edna Smith
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Smith
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Smith
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Smith
Sibling · 1940 · age 17
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 — Plaquemines-County, Louisiana
Open full size
1940 US Federal Census — Plaquemines-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01439-00090)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Foster | 37 | Head | Night Watchman | West Indies |
| 2 | Coralie Foster | 34 | Wife | — | Louisiana |
| 3 | Edward Foster | 15 | Son | — | Louisiana |
| 4 | Gustave Anderson | 78 | Head | — | At Sea |
| 5 | Jessie Carr | 43 | Head | — | Louisiana |
| 6 | Edward Carr | 18 | Son | New Worker | Louisiana |
| 7 | Terrium Viger | 22 | Son-in-law | Motor Engineer | Louisiana |
| 8 | Rose Viger | 18 | Daughter | — | Louisiana |
| 9 | Grace Viger | 2 | Granddaughter | — | Louisiana |
| 10 | Leo Trahan | 42 | Head | Laborer | Louisiana |
| 11 | Irene Trahan | 39 | Wife | — | Louisiana |
| 12 | Ruth Trahan | 13 | Daughter | — | Louisiana |
| 13 | Leo Trahan | 6 | Son | — | Louisiana |
| 14 | Charles Smith | 52 | Head | Boatman | Louisiana |
| 15 | Edna Smith | 27 | Daughter | Clerk | Louisiana |
| 16 | Harold Smith THIS PERSON | 25 | Son | Boat Operator | Louisiana |
| 17 | Margaret Smith | 23 | Daughter | — | Louisiana |
| 18 | Joseph Smith | 17 | Son | New Worker | Louisiana |
| 19 | Roy Smith | 14 | Son | — | Louisiana |
| 20 | David Smith | 3 | Son | — | Louisiana |
| 21 | John Meyers | 21 | Head | Waiter | Louisiana |
| 22 | James Meyers | 18 | Brother | Assistant Boatman | Louisiana |
| 23 | Stanley Spencer | 17 | Lodger | Deck Hand | Louisiana |
| 24 | Katie Nelson | 67 | Head | — | Louisiana |
| 25 | Louis Nelson | 27 | Son | Night Watchman | Louisiana |
| 26 | Edward Nelson | 23 | Son | Deck Hand | Louisiana |
| 27 | August Leepas | 29 | Head | Boatman | Louisiana |
| 28 | Beulah Leepas | 23 | Wife | — | Louisiana |
| 29 | Anna Loga | 51 | Head | — | Louisiana |
| 30 | Benjamin Loga | 25 | Son | Fisherman | Louisiana |
| 31 | Maria Loga | 20 | Daughter-in-law | — | Louisiana |
| 32 | Barbara Loga | 2 | Granddaughter | — | Louisiana |
| 33 | Lois Loga | 1 | Granddaughter | — | Louisiana |
| 34 | Ellis Loga | 30 | Head | Patrolman | Louisiana |
| 35 | Esther Loga | 28 | Wife | — | Louisiana |
| 36 | Ellis Loga | 6 | Son | — | Louisiana |
| 37 | Clene Loga | 5 | Son | — | Louisiana |
| 38 | Nicolas Ivankovich | 32 | Head | Gager | Louisiana |
| 39 | Jewel Ivankovich | 22 | Wife | — | Louisiana |
| 40 | Kenneth Ivankovich | 3 | Son | — | Louisiana |
Related Census Records
Pedigree Summary
Harold + 5 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)