MS
Marian Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Marian Smith across the 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Smith |
| Given Name | Marian L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elk River Twp |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Elk River Twp |
| Est. Birth Year | ~1929 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marian | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Smith | Spouse | — | 35 | ~1905 |
| Lois Smith | Daughter | — | 5 | ~1935 |
| Marian Smith | Daughter | — | 11 | ~1929 |
| Floyd Smith | Head | — | 40 | ~1900 |
| Maxine Smith | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Clinton, Iowa
Daughter, age 1
Clinton, Iowa · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Marian L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Daughter, age 11
Clinton-County, Iowa · implied b. ~1929 — 5 household members
| Surname | Smith |
| Given Name | Marian L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elk River Twp |
| 1935 Residence (County) | Clinton |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Marian Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marian Smith
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Lois Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Smith
Sibling · 1940 · 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
1940 US Federal Census — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01151-00129)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Meryl W Thomsen | 32 | Head | Farmer | Iowa |
| 2 | Josephine M Thomsen | 36 | Wife | — | Illinois |
| 3 | Thomas J Thomsen | 7 | Son | — | Iowa |
| 4 | Josephine L Thomsen | 6 | Daughter | — | Iowa |
| 5 | Lois M Thomsen | 3 | Daughter | — | Iowa |
| 6 | Marilyn R Thomsen | 1 | Daughter | — | Iowa |
| 7 | Herman D Daehler | 47 | Head | Farmer | Iowa |
| 8 | Helen Daehler | 46 | Wife | — | Iowa |
| 9 | Marian J Daehler | 20 | Daughter | Bookkeeper | Iowa |
| 10 | Harriette Daehler | 17 | Daughter | — | Iowa |
| 11 | Howard L Tyler | 44 | Head | Operator | Iowa |
| 12 | Ida M Tyler | 42 | Wife | — | Iowa |
| 13 | Homer H Doms | 33 | Head | Farmer | Iowa |
| 14 | Maria H Doms | 35 | Wife | — | Iowa |
| 15 | Lowell F Doms | 7 | Son | Laborer | Iowa |
| 16 | Florence F Doms | 4 | Daughter | — | Iowa |
| 17 | Joseph Carter | 31 | Head | Farmer | Iowa |
| 18 | Leola E Carter | 25 | Wife | — | Missouri |
| 19 | Dona L Carter | 5 | Daughter | — | Iowa |
| 20 | Shirley M Carter | 4 | Daughter | — | Iowa |
| 21 | William J Carter | 1 | Son | — | Iowa |
| 22 | Floyd Smith | 40 | Head | Farmer | Illinois |
| 23 | Marjorie A Smith | 35 | Wife | — | Iowa |
| 24 | Maxine E Smith | 14 | Daughter | — | Iowa |
| 25 | Marian L Smith THIS PERSON | 11 | Daughter | — | Iowa |
| 26 | Lois J Smith | 5 | Daughter | — | Iowa |
| 27 | Robert L Hudson | 62 | Head | Farmer | Iowa |
| 28 | Annie E Hudson | 62 | Wife | — | Iowa |
| 29 | Nettie F Kastner | 59 | Sister | — | Iowa |
| 30 | Peter D Diercks | 54 | Head | Farmer | Germany |
| 31 | Meta Diercks | 52 | Wife | — | Germany |
| 32 | Donald W Diercks | 16 | Son | Laborer | Iowa |
| 33 | Frank Q Anderson | 52 | Head | Farmer | Iowa |
| 34 | Grace E Anderson | 53 | Wife | — | Iowa |
| 35 | Earl R Anderson | 15 | Son | — | Iowa |
| 36 | Roy K Anderson | 12 | Son | — | Iowa |
| 37 | Harry D Hall | 53 | Head | — | Iowa |
| 38 | Raymond W Cole | 46 | Head | Carpenter | Iowa |
| 39 | Maud M Cole | 41 | Wife | — | Iowa |
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)